My DS is 6 1/2 months old. Until 2 weeks ago he was a great sleeper, consistently slept 7pm til between 6 and 7am. 2 weeks ago he started daycare 4 days a week when I went back to work. Ever since he has been waking at approx 3am and no matter what I do he will not go back to sleep unless I am holding him. While as mum I normally wouldn't mind the odd 3am wake up but I am totally shattered after 14 continuous days of it.

There are a number of possibilities that could be causing this that I can think of but I honestly have no idea.

Simply unsettledness from starting daycare
He has been snotty as he got his first cold on day 1 of daycare
separation anxiety
Allergy /intolerance (he isn't eating anything unusual but is having milk with weetbix for breaky)
Teething
growth spurt (he seems to have stopped a few days ago with needing extra formula)
wonderweek/ fortnight.

The poor kid seems as overtired as I am, I would co-sleep but it really isn't an option as my husband is 6 foot 4 and very solid and is freaked out that he will accidently hurt DS. He seems perfectly fine besides the snot and I had thought it was his teeth as bum changed fed and cuddled he will drift off but as soon as he is down in the cot I crawl back into bed and pull the doona on he wakes again and is crying. Seriously started to think he has a Mummy sleep sensor LOL.

I am really after any suggestions of what might be causing him to wake and need attention or if anyone has experienced this before and is completely normal for his age/development?? Hit me with your thoughts

TIA