Jacki- he is not getting too much sleep during the day is he? My DD starting waking for long periods at night at 4 months and I cut her day sleeps down to about 3 to 4 hours and she then stayed asleep at night. But then another change happened but that's another story..........
Eveningstar- I have read that babies should have their own linen (ie cotton or wool rug) when co sleeping and doonas are not advised. May be keeping her restless??? If you can figure out how a baby goes between 2 adults sharing one doona and the baby in the middle isn't covered by it, let me know!!