I think your LO is the same age as mine? 7.5 ish months? We just had a long spell of EWs like this, 5:30-6am (occasionally earlier!). We are still getting some 6am ones but she is sleeping until 7am again some mornings. I have no real idea why she was doing it. I suspect teething was a part of it, and I do seem to remember all my LOs going through periods of EWs while teething. Also when she is going through developmental things like learning to roll or crawl she wakes earlier to 'practice'. I don't believe, in our case, that the routine is causing the EWs. I would however avoid a catnap at this age. Perhaps someone with better routine advice might pop along soon. Hugs! I despise EWs, even more than NWings or short naps!