I'm having the same issue! My baby just turned two months old (nine weeks) and I feel like she is never going be nursing efficiently enough for me to be able to exclusively breastfeed her. I cannot pump enough to satisfy her. She was born at 8 pounds, but I had iv fluids during labor so I'm not sure if that caused swelling for her to weigh more. When we left the hospital her weight was fine and she was gaining well at her one week appointment. She did not have a two week appointment because the pediatrician didn't tell us to come back then and we ended up getting a different doctor for her one month. I saw a lactation consultant when she was one week to make sure I was breastfeeding her correctly and I was. Everything was fine. She was quite a crabby baby for the first month. I would breastfeed and let her finish the feed and would do compressions and tickle her feet, etc to keep her awake. It would take her an hour to eat, but I was trying to feed her on demand and at least every two hours. She was crying a lot and was rooting a lot and i didn't understand what was going on. She would seem completely satisfied and then be crying less than 30 minutes later. I was going crazy because my husbands job keeps him away from home for a few days at a time so it was so hard for me with a non stop crying unsatisfied baby. I did not know what to do and got the horrible advice that babies need to suck and to give her a pacifier in between the two hour feedings. At four weeks, we found out she only weighed 7.6 which was under her birthweight of 8.1. The lactation nurse watched me feed her and helped me try to keep her actively eating as much as possible. We weighed her before and after the feed and the nurse determined she had only eaten an ounce and a half, so I needed to give her an ounce of formula after each feed to try and get her weight up. So in emergency mode I did as she said and my baby was HAPPY and a totally different baby. She gained 11 ounces in one week. I saw a different lactation consultant for two more appointments following that and we determined that my baby was not being an efficient eater and my milk supply was low. So for five weeks now I've been battling with the vicious cycle of a supplemental nursing system, a hospital grade pump, formula, bottles, etc. I want so badly to exclusively breastfeed, but I cannot get away from the formula and I feel like nothing I do will increase my supply. Today, for example, I breastfed her with switch nursing for an hour and a half straight and she still came off the breast hungry. I'm trying now to pump as much as possible, but life gets in the way. My new strategy this week has been to pump first, put what I get in the sns and then add formula to it if needed so the sns bottle has two ounces. Then I feed her on one breast and try to get her drinking as much as possible, and then I'll try to give her the second breast. My thinking behind this is that I pump as much as I can out and then she can be eating the supplement plus stimulating me to make more because she will actively eat with the sns but not always with my breast alone. I'm not sure if it will work or not. I'm so unbelievably frustrated because it started out with supplementing a small amount and now more than half of her feeds are formula! I want just plain stop the formula cold turkey but I can't until she eats more efficiently and stops falling asleep at the breast and I can make enough milk for her. I'm so exhausted from this battle. I'm glad that the formula fills her tummy and makes her a happy baby, but I want my breastmilk to do that for her. I'm hoping if I can stick with this plan I can start decreasing the formula. I bought a baby scale too. She is now just over ten pounds at nine weeks so she has gained almost three pounds in a month. Also, my doctor prescribed reglan to me but I don't dare take it because of the SCARY side effects warning. I just don't know how to stop this vicious cycle.