Hi,

It is always better late than never, You still have a lot of time for your JEE mains, both 11th and 12th chapters are equally important for Mains and sufficiently dividing time for both is very important so allot sufficient amount of time for the revision of 11th chapters as well because it will be difficult for you if you completely depend on 12th chapters. If you spend your remaining time in a planned manner you can easily crack JEE Mains.