My DS is 12 weeks (ff) and on a 7, 10, 1, 4, 6.30pm routine through the day and sleeps from 7pm to 6am (i'm lucky i know). I'm thinking ahead but don't know when you start thinking of moving to 4 hourly. I asked the health visitor and she said i could now by waiting to see if he can go longer between feeds. I did try for a couple of days but haven't really got his naps sorted during the day so felt it was too soon. What I don't understand though is if you completely drop a feed do you have to increase the other feeds during the day so he takes the same amount over 24 hours but in 4 bottles? What do you need to look for before you start thinking baby might be ready (or is it a particular age?).