Hi, I'm going back to work in a week and my 4 & 1/2 month old has started to refuse the bottle he much prefers the boob. He has been taking a bottle once every second day since he was 5 weeks old (using EBM), and in the last 2/3 weeks we increased it to 1-2 bottles a day (using EBM & formula). All this time we have been using the Avent bottles & teats with the number 2 teats (have tried the number 3 teats which he takes sometime but he coughs & splutters a bit with them). In the last week each time he sees the bottle he just starts screaming. I'm wondering if maybe his teeth are bothering him, he has had red cheeks on & off since he was 12 weeks old, he sucks on his hands & drools a lot. I'm going to get some teething numbing gel to put on his gums before feeding him and am looking for some bottle and teats that might be a bit softer on his gums, any suggestions?