Can anyone advise? My baby is 5 mths old and has been on aptamil comfort milk for 3.5 mths due to bad trapped wind etc but have been told that he will have to go on hungry baby formula before I wean him. Is this correct and if so should I change to aptamil 1 before so his digestive system can get used to something that is a bit more difficult than the comfort milk to digest? or just try introducing aptamil one on a few feeds to get digestive tract used to digesting harder formula?