Pumping less - how to reverse this ?

Justine ♡ • MAMA to a beautiful boy. ♡

Is there any way to bring back my milk supply in? I stopped pumping less & less & somedays go without pumping at all.. we were switching into formula which he ended up not even liking, but now I’m pumping like 2 oz combined.. 😳 at first it was like 5oz each boob.. any way to bring it back to before ?