My 8 week old DS is on tommee tippee bottles with teat size 1 but has recently started falling asleep mid feed or becoming agitated half way through and wriggling a lot and taking less milk. I thought it might be time to move to teat size 2 but he suffers from reflux and i'm very anxious not to make that worse. He has gaviscon in his bottles. I tried one teat size 2 earlier and he was gulping and then when i burped him he was a sick - it was only a small amount but he wasn't happy. He carried on gulping the milk and was very noisy and i then switched the teat back to size 1 for fear of bringing on his reflux.
Is it normal for babies to gulp/be sick on the first few bottles on bigger teat size or have i tried to move him up too soon? He is just over 8 weeks and will eat 4 oz on teat size 1 every 3 hours when he is willing to have the whole bottle (other times he stops after 2 or 3 oz). He is 11 lb.
Any advice much appreciated as i'm very confused! Thanks.