DS is almost 4 months and is hardly drinking much during the day. He's gone from drinking 150-180ml at each feed to not having more than about 50-60ml. He just pulls off and cries when I try again. He makes up for it a bit by feeding every 2 hours during the night while he's half asleep. Apart from it being exhausting at night I don't mind too much as at least I know he's drinking something.
He's happy and well otherwise - chattering, smiling and interacting as per usual. Is this normal for this to happen? I'm not sure if it's teething or the 4 month regression. Just after reassurance that this is a normal phase I guess. TIA.