Only producing half an oz

So I was an over producer. I got lazy and started pumping every 4-5 hours. Now I am pumping 3 and a half from one boob and half an oz from the other every time I pump. Is it possible to dry up in just one breast? I'm getting back on track with pumping but it's not making a difference. Sometimes I can't get anything at all from it. Should I just give up? Or do you guys have suggestions to boost my supply?