DD is 23 weeks and has always been a great sleeper. For weeks now when i wake up in the morning (about 7.30) she is just lying there, looking at her mobile (or me, in the bed beside her cot!) and normally sucking her thumb. Never any crying, noises or gurning, despite not having been fed since 6/6.30pm. I'm not complaining, but just wondered if it is 'normal'?