Hi,

As others have mentioned, four months heralds a new and very interesting developmental stage. At this age, babies are becoming increasingly aware that they are a separate being from mum. To a baby, mum is everything. As he gets older, he wakes, and knows you are not there - and cries for you. So often where a baby has *self settled* previously, they will stop doing this. Another common behaviour is "reverse cycling". During the day babies are very busy and inquisitive at this age - taking in everything around them. They can hardly bear to stay still and feed. Often feeds will be very short during the day - they want to get on with it. But at night it's quiet and they can call mummy and she comes and have a nice long feed with no interuptions and nothing to look at. Do either of these scenarios sound familiar to you? On top of this, Christmas and the holidays is generally unsettling and busy for us all. It's unlikely that he needs more food - it's you he wants. If you have fed to a schedule you might find it helpful to offer more feeds during the day (even if they are short.) Give it a few days/weeks and see how it all sorts out. Co-sleeping might aford some more sleep for you, you sound tired. Think carefully about the ramifications of introducing a formula bottle. In my personal and professional experience it works *once* (just enough to break the mother's heart and beat herself up that he must have been hungry after all) Giving formula is the first step to weaning your baby. In the long run, babies do what babies want to do - we gently mold them inot something that suits us - but what affect that has is debatable. Your baby is going through another stage - it's nothing you are doing or not doing.