DD is a rearly light sleeper and her room is just off ours and DS is in our room - anyway - that aside, even him cooing and gurgling will wake her up. After months of her waking at 5am, she now goes to 7-8am (hoorah). DS wakes any time from 5:45am. Ideally I would let him sing in his cot for a while as I think it's good for him to have the space to wake up slowly as it were and for him not to associate me coming the second he makes a noise. BUT I end up shooting out of bed, scooping him up, nappy change downstairs and plonking him down in front of the TV while I go and get showered before DD wakes up.
Should I really just let him sing until he actively wants attention or protect DDs sleep?