Hi just want to check my lo is taking 4 oz in his bottles he usually leaves bout half an oz at the end. He will b 8 weeks on friday and was weighed last week being 10 lb 4 oz just wondering is this enough formula i dont think he would take 5 oz if offered it to him but wondering should i make up 5 oz bottles yet just in case he would want it or leave him for a while. Thanks Patricia