CA Final Audit and Law

I'm attending both groups. So, not much of a time.

I have difficulty in framing answers for auditing (especially standards). What book should I refer to and how should I go about ?

And similarly which book is best for Law (incl allied laws, IBC, amendments) considering time and the content (except Munish Bhandari sir's - which is too big to be completed in 2 months, with 7 other papers on hand, and I have also not had the experience of reading it before)?

Pl help. Thanks.