Hello

It's never late when u get to realise what you have did in the past days. It's good that you realised and started your study with full of dedication. At first, I'll suggest you to strategize a plan to cover your syllabus of class 12 along with class 11 simultaneously and  take you self assessment everyday that what you have studied and mark your score on any sheet.

Monitor your performance and soon you will see the changes which you always have been planning for.

And if you really want to crack NEET next year. I'll strongly recommend you to visit this link and enroll for your journey to reach the pinnacle of glory:

https://learn.careers360.com/knockout-neet-may/

Hope this helps you.

Thanks.