Messed up real bad for may/june preparation

Didnt start studying until this month. Had 4 subjects in mind: Maths, PST, Urdu, And C.S. The main problem is that C.S seems like im studying some different robot language and im oblivious in this sub. Today gave test and im sure that im dropping this subject and opting for Bio. Urdu is my weakness (grade 2-3 level urdu h meri). Maths is also my weakness but found good teacher so i believe i can tackle it. PST is boring but its manageable. Now my main question is that is it possible to study Bio from scratch, get pro in urdu, be fully prepared for maths and PST within just a span of 3 months. If so, what should be my strategy. If not, then should I give bio in oct/nov? I am willing to do the hardwork. Please if someone experienced would help, it would be of great help 🙏🏻