Yes I'll enlist down some of the channels where you can watch videos and learn and prepare successively for AIIMS BIOLOGY.

1. Biomentors Classes Online
2. Doorstep Tutorials Biology
3. Careerpoint Kota
4. Misostudy online best tutorial coaching clases
5. Etoos Education

You can watch some of their videos for the chapters you need help in and then make your notes and successively study.

Thank-you. All the best