My DS has just turned 11 weeks and for the past week or so his sleep has deteriorated. He is a reluctant napper during the day anyways, so I usually try get him out in the pram/car to avoid an over tired baby. DP was giving one bottle of formula at bedtime as part of a "routine" and DS would sleep for a stretch which helped me out a lot. However now DS refuses a bottle (so is EFB) and will now only stay asleep 2 hour max and wants to feed every time he wakes. Is he having a fussy phase, suffering with FOMO?? I've heard a lot of people say they improve at 12 weeks but is this really true?