S omewhere around the third week of trying to study after a 10-hour workday, most people hit the same wall: they open their notes, stare at a DILR set for five minutes, and just... close the laptop. If that's happened to you already, you're not doing anything wrong. This is genuinely hard. You're competing against people who get to treat CAT like a full-time job, and you're squeezing it into whatever's left after yours.
That said, plenty of working professionals do crack CAT every year. It's not magic — it's mostly about being smart with the hours you actually have, instead of wishing you had more of them.
Don't wait for the "right time" to start
There's never a slow month at work. If you're waiting for things to calm down before you start prepping, you'll be just waiting. Whatever bandwidth you have right now — even if it's an hour a day — start using it
Ideally you want 6-7 months of runway. If you've only got 3, that's fine too, you'll just need to be more selective about what you study (more on that in a bit). What matters more than the calendar is that you actually begin instead of planning to begin.
Find your windows and defend them
Everyone's schedule looks different, but most working aspirants end up leaning on one of these:
Early mornings tend to work well because your brain isn't fried yet and nobody's pinging you on Slack at 6:30 AM. Commute time is another one people underuse — if you're on a train or bus for 40 minutes each way, that's prime time for vocab or revising formulae on your phone. And then there's the late-night slot after dinner, which honestly isn't ideal (you're tired, your brain's slower) but it's often the only option some days, and that's okay.
You're realistically looking at 15-20 hours a week if you're consistent on weekdays and put in a solid chunk over the weekend. That's not nothing. People have cracked 99+ percentile on less.
You will not have time to study everything equally — so don't try
This is probably the mistake I see most often. People try to be equally good at every topic because that feels "safe," and end up mediocre across the board instead of strong where it counts.
Take a mock in week one before you've studied anything. It'll be humbling, but it'll also tell you exactly where your natural strengths are and where the gaps are. Then lean into that. Arithmetic and Reading Comprehension carry a lot of weight on this exam — get genuinely good at those before you go chasing some obscure Logical Reasoning set type that shows up once in three years.
Your weak areas still need attention, but the goal there isn't mastery. It's getting them to a point where they stop actively costing you marks.
Mocks matter more than they feel like they do
It's tempting to keep "preparing" for a few months before you take your first mock, because taking one feels scary when you're not ready. Take it anyway. Early mocks aren't about the score — they're about exposure. You need to know what a 2-hour test feels like when your brain is already tired from work, because that's the exact condition you'll be taking the real exam under too.
One full mock a weekend is a reasonable rhythm. And honestly, the mock itself teaches you less than the hour or two you spend afterward going through what you got wrong, what you skipped that you shouldn't have, and where you burned time you didn't need to. Skipping that review is basically wasting the mock.
Study in small pieces, not big blocks
You're not going to get a free 3-hour Sunday afternoon most weeks — accept that early. Instead, break things down. Ten minutes waiting for a meeting to start is enough to run through a formula sheet. A lunch break can fit a short concept video. Keep a running note (a phone note works fine, doesn't need to be fancy) of formulae, common traps, and shortcuts you keep forgetting, and glance at it whenever you get a spare five minutes.
It adds up faster than you'd expect.
Weekends are your real asset — don't waste them, but don't torch yourself either
For most working professionals, weekends are where the bulk of the actual studying happens. Guard that time. Say no to the brunch, skip the errand run if you can push it to a weekday evening instead.
But there's a flip side — cramming 10 hours into a Saturday because you feel behind usually backfires. You'll be foggy by hour six, retain less, and walk into Monday already exhausted. A Saturday with 4-5 focused hours plus a Sunday mock and review tends to beat a marathon session that leaves you fried.
Talk to the people around you
This one gets skipped a lot, but it matters. Tell your manager, if you're comfortable, that you're prepping for something big outside work — most are more understanding than you'd expect, and it can buy you a little flexibility on late meetings or deadlines. Same with family and friends. Let them know you'll be a bit of a ghost on weekends for a few months. It removes a layer of guilt that otherwise eats into your focus.
Sleep is not optional, no matter how behind you feel
It's tempting to cut sleep to "find" more hours. Don't. A tired brain forgets more, makes dumb calculation errors, and just generally works against you — so those extra two hours you steal from sleep often cost you more than they give back. Six to seven hours, non-negotiable-ish sleep.
The last month is for revising, not learning
Resist the urge to start a new topic in the final few weeks — it rarely pays off and mostly just adds anxiety. Instead, go back over your error log, redo formula sheets, and take mocks more often if your schedule allows it. Spend some time thinking through exam-day logistics too: which section you'll tackle first, how you'll pace yourself, what you'll do if a section starts going badly.
READ MORE: CAT ENTRANCE EXAM- TIMELINE, SELECTION CRITERIA, CUTOFF
One last thing
There's no version of this where you'll feel "fully ready." What actually separates people who get a good outcome from people who don't usually comes down to just... showing up consistently, even on days it's inconvenient. Ninety focused minutes a day for six months beats a chaotic burst of studying in September, every single time.
It's a rough few months. But it ends, and if the goal on the other side is genuinely worth it to you, this is a very doable trade-off.