I feel like my baby isn't eating enough and I don't know what to do! He is gaining weight but not per the chart. Yesterday he was only having 2oz at a time every 3/4 hours and he's nearly 12 weeks old. It's like he's not bothered about eating much, he will start to chew on the teat & use his tongue to get the bottle out his mouth . I was exclusively breastfeeding him, sometimes from the bottle and takes it fine. But recently I've been been trying to reduce my breastmilk supply by introducing formula. Normally I would make a bottle with 2oz formula then add 2oz expressed breast milk, he took this fine, but it's the last day or 2 he's not feeding great. Do babies have off days sometimes? Xx