Griffiths QM is kinda meh. It’s the one I used in my courses, but later while trying to relearn, I found Shankar’s Principles of Quantum Mechanics to be pedagogically superior. From the intro,

“Since the math introduced has to be taught sooner or later, I prefer sooner to later, for this way the students, when they get to it, can give quantum theory their fullest attention without having to battle with the mathematical theorems at the same time. Also, by segregating the mathematical theorems from the physical postulates, any possible confusion as to which is which is nipped in the bud.”

Shankar’s lectures are on YouTube as well.

A QM book is probably beyond the immediate need of the OP, but this might be useful to someone.