9 month old taking in less ounces

Ashley

Hi, my 9 month old is suddenly taking in less ounces and is pushing away the bottle. He has always gone in waves but the Doctors are stressing us out because he is in the 1% for weight. Does anyone else’s baby go up and down in ounces?? He is only Bottle fed. He usually takes 17-20 but now barley getting 12 for bed time and suddenly waking to eat in the middle of the night to make it to 15-16.