Ohkayyyy so if u have decided whether u want to take up medical for future or engineering then u must be knowing that u have only 3 main subjects and if not then u will have to study each of them carefully.
I myself was a pcmb student and I never felt burdened by any of the subjects .
U will just have to learn how to manage it .
Divide ur time among all the four subjects if there is any of them that u think is easy u can take out less time for that ...
Maths is a subject that u will never have to give too much time it just requires one time attention just attend the class listen to the teacher carefully and u will be done with mathematics ...
Rest needs time and u will have to give it to them .

It's your choice. It all depends on you. Being a PCMB student myself, I don't think it to be burdening me. All these peoples voice are fake. For bearing fruitful results you need to be exceptionally unique from others. Hope it helped. All the best. Have faith in yourself and on god and try your best in order to Eliminate the rest and become the best