So my baby is 12 weeks today. He used to drink between 5/6oz every 3 and a half to 4 hours. He was draining his bottles. Now he’s constantly got his hands in his mouth and will only take between 3-4.5oz every 3/4 hours. He is also waking more at night time. Any suggestions what this could be? I don’t want him to start losing weight 😭