Starting class 12th

My batch starts from 1st , I am thinking of following both unacademy and pw(as we have to choose teachers in unacad as well). I have been studying from last year's batches from the last 15 days so I know that they will be completing the syllabus later than I am targeting.

Since I cannot really follow a batch. A question for the seniors who completed their syllabus in sept - oct . What should I do to achieve my target and I cannot delay it because I require a lot of practice. Or tips from peers .