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need urgent advice regarding this IAL sub ,I mesed up

Is it possible to complete IAL biology (6 units) in 6 months considering that I have all the notes form a top student and some playlists . I am able to study 8 hours daily. Will completing it be eventually worth it ?
I completed A2 this May session with the subjects Phy,Chem ,Math.
I can't take a full gap year bcz my parents are old and I would be a burden to them if I waste so much time .I'm 18. They said that I should complete it in 6 months . I will not have a teacher for regular classes but I will go to a teacher for mocks .I will solely depend on self studying using the book and other resources while preparing if doing this is feasible . I am losing my mind here .