I can see your predicament.
First what were you doing lately ?
I have read a suggested program with 3 gym visits daily on this website but you must know that overdoing it muscles wise is a thing to avoid, just like CNS wise, and joints wise.
Your profile does not say, so how old are you ?
Guessing from where you posted you want to get bigger. High volume never reaching failure, you might train 6 days, twice daily. 20, 30, 40 minutes average depends on where you are now. Knowing yourself you decide if A B C A B C off is right for you. Chad Waterbury just wrote a new book about frequent training(HFT high frequency training a more sellable wording using body weight, i would guess chins, push-ups … I read his previous book (borrowed from librairy get huge in a hurry) where you can find 2 chapters about training frequently. Titles are from memory, if you are motivated with the name of the author you will find.
All the best !