Worried after seeing the calibre of section bank questions

I'm getting really nervous about the difficulty of the section bank questions for Bio and Chem/Phys.

Psych/Soc is OKAY..... but the level of detail for those other 2 are really worrying me.

I have about 1.5 months left until exam day.

I didn't score too hot on the Question Packs either. Averaged around a 78% on Bio, Physics, Chem.

I'm not sure if the best strategy is to do more content review or just do as many questions as I can.

Currently my strategy is to do about 20~ questions from...

Worried after seeing the calibre of section bank questions