my son 4 month old he is not drinking formula milk.. we are using similac 1.. in 2 hours he is drinking only 20 to 30ml.he is dinking breastfeed only 5 minutes..my breast milk is less from starting we depend mostly in formula milk.... I checked my breast milk with breast pump it's only 30 ml for 3hours.. I give him when he born his weight 2.4...now in 4th month 5 doctor telling his good weight...we used to feed him 40 to 50ml every 2 hours last month.. from third month ending he started drinking milk very less.. I ask doctor to change formula he said no if we change formula we want drink milk.. please give any solution...