How much you train and how often you train it. Get these two variables right and most programmes work. Get them wrong and even great programming stalls.
actually drive growth?
These are per muscle group. A chest exercise in a push session contributes to weekly chest volume. Track it across all sessions, not just the ones labelled "chest day."
each muscle group?
frequency go wrong.
Build from here.
You don't need more sessions. You need the sessions you have to actually accumulate enough quality volume — and enough recovery to adapt to it.
Count your weekly sets per muscle. Aim for 10–15. Spread them across at least two sessions. Then let the recovery do its job.