I'm not sure what to do now! LOL Jacob will sleep well for his 2 daytime sleeps (no problems getting him down) but is waking up at 5.30 am as I mentioned.

Any suggestions on what I should do?

I don't think I should make any changes right now as he's unwell, but considering his daytime sleeps are at this stage ok (he's obviously tired or he wouldn't sleep)....it's just the early rising at this stage that is a worry!!