My 8 week old baby won't sleep in his next to me at all. He will go down in it, drift off to sleep and then jolts himself awake 5-10 minutes later and this repeats all night. He seems quite happy in there but just can't get himself back to sleep once awake so needs shushing etc. Is there anything I can do to help him stay asleep? At the minute I'm giving up a few hours in and letting him sleep on me