sOUNDS LIKE HE'S GOING THROUGH A GROWTH SPURT - LET HIM NURSE AS OFTEN AND FOR AS LONG AS HE WANTS, THIS WILL INCREASE YOUR (oops, sorry for the caps! ) supply. DO NOT give a bottle, as this will have the opposite effect - the more he nurses, the more you will produce. It's common for your breasts to not feel as full, but if you are his sole source of nutrition you will produce enough.