GC and QR advice needed

Hello guys, im currently 40 days out from my exam, my content review phase is almost done as I'm following the booster schedule. every section so far is great besides QR and Gen Chem. I just feel so overwhelmed with the amount of formulas and calculations they throw at you. It is just difficult for me to grasp some concepts from boosters instructors these sections. Do you guy think I should buy a booster crash course for these sections or purchase chads prep dat prep? These 2 resources have helped many others from what I've seen, I just need more opinions or advice. thanks!