learn to work with your b game. If you play full time and you simply cannot skip playing days, just load a few less tables, get some games in, simplify decisions a touch.
Also, know what you do when you are playing your b game, it could be that you are impatient or you play recklessly, if you know that about yourself and you know you are playing your b game, make sure you keep this in mind when you are playing and keep focusing on that weak area.
if possible, play slightly shorter sessions and take breaks regularly, re hydrate eat etc etc.