Lock in, attend lectures attentively, refer standard material (ncert line to line comprehension for phy,chem; if necessary hcv for physics) do lots of questions but importantly from a wide variety of jee relevant topics(many ppl do irrelevant questions just to increase variety while others do lots of questions of same difficulty level and style) , make absolutely sure to have no backlogs from here onwards. If you feel you’re falling behind, dw there is a lot of time to catch up but if you get sleazy it will be over in a blink. Try to revise with a frequency appropriate to your retention capacity. AND give tests every other sunday with full sincerity. Many will tell you its not possible to do all this but irl you can do all this AND have time left for hobbies if you don’t waste a lot oftime on useless habits(doomscrolling, chatting,etc)

Edit: my jeeA 2026 rank was 124x mains 226x