I train pretty day to day. Some days I don't even wanna be there and I just go through the motions. Other days I'm ready for it and go for broke.
I rarely do the same exact routine 2 weeks in a row. Yes it's chest day but sometimes I don't feel like horsing with DB and will just use the smith machine. Or some fuck tard has camped out on the equipment so I'll do something else.
Try some lower reps like 6-8 esp on heavier mass moves like bench or squats. Keep higher reps to isolation moves IMHO.