Having lots of trouble trying to bf whilst also dealing with a toddler. Nights have been awful and last week I decided to ff. was mixing ff and bf but didn't feel happy and nights didn't get any easier so have decided to go back to bf. haven't given any formula for over 48 hours now.
But one of my breasts is tiny now, it feels like it did before I got pregnant. I keep offering it to ds all the time and am now also using a manual pump on it - only getting a tiny amount of milk but it is definitely coming out a bit. Breast remains far smaller than the other one though. Can I fix this, will supply increase if I keep this up?
Really worried I've wrecked my chances of bf by introducing the formula. Wish I could turn back time and not have done it, but I'm getting about 2 hrs sleep a night and thought it was the answer. 
Please can anyone give reassurance and advice?