DD 7mo always bloody always wakes between 4.30 and 5, clearly exhausted and won't go back to sleep.
It's the only parenting issue where I have never seen one bit of advice that I think might help. Often go on mumsnet etc about other things and usually see something where I think hmm that's interesting, hadn't thought of that etc. (although that is among the myriad of super irritating 'have you tried shh pat?' And the like).
Want to tear my hair out every morning when I try and Google tips and I see 'you may feel like 7am is too early to start the day but really this is quite normal for a baby' or 'make sure the room is dark'.
Bastarding bastards.