does he drink properly a night? my girl has no problem drinking at night but pass morning, her problem will cum.
then i realise recently that its because she doesnt want to drink. it has been the 4th day now that she has no problem drinking in the day. from 3 hour i exend to 4 hour... ( during the interval if she cries then i will let her drink..) let her hungry hungry..
if 4th hour she still dont want drink then i will let her sleep.. record is about 6 hours without milk.. when she wakes up, she drink up fast.
last time the teat hole was too small.. cry.. mother in law cum and poke another want.. hole too big..cry.. i ask her poke a bit then she is ok now..
another thing is if too hot and she is sweating, she dont want drink.. very fussy my daughter..
probably you may try extending to one more hour from his usual feeding time..
if at night he still cry when drinking milk then from what i check in the internet, maybe is thrust in the tongue ( while spotting that wont come off) or throat problems.. may want to see a GP already. got medication before feeding to help.