Low supply mum

Hi mummies, my baby is 3 months old and due to irregular pumping my supply is very Low which I yield about 20ml total or even less for each session. Basically My frequency from 6 times a day to 1-2 times a day. And I’ve stopped for few days now. Does any mummies here , have tried to start back pumping again? Is it too late? Any advise on increasing yield? I am still considering whether to stop pumping and just go with fully FM as starting work soon. But I keep having this thoughts running in my head like I feel bad for not able to give my LO breast milk and a part of me telling myself formula is good for baby too as long baby is healthy , happy and safe