how to mange the time in study anatomy,physiology and biochemistry
Start by learning the fundamentals of both biology and chemistry (specially topics like cell biology, body systems, organic & inorganic equations). Once you do that, go through videos, charts and 3D models that cover all three topics. This will reinforce the fundamentals.
There are two books I have used, and recommend, for those studying these subjects:
1) Ross Anatomy and Physiology
2) Ace Biochemistry by Dr. Holden Hemsworth
Both are great for solidifying your understanding of anatomy, physiology & biochemistry and will also help you deal with advanced topics easily.
Best wishes. Thank you.