I haven't been successful in weaning Mateo from the bottle and being able to breastfeed him 100%. Though he is taking in a lot of breastmilk. We have a lazy suckler on our hands and he just gets so frustrated whenever he feeds from me and he is very hungry. Although my milk supply is still low, I am able to pump enough so that he gets pure breastmilk during the day and only takes formula at night. We've noticed an advantage also of letting him take formula during the night, he usually sleeps longer. Since formula takes longer to digest than breastmilk, we opted to give it during the night. Otherwise, we would have to get up more to feed him. I also let him feed from me during the day, when we are both more patient. Hehe! My only consolation with our feeding set-up right now is that Mateo still gets the benefits of drinking breastmilk 