My 6 month old used to be a really good sleeper, she used to sleep from about half 7, has a feed at 11 & then used to sleep till 7 in the morning,
Recently she's refusing to sleep in the day longer than 20 minutes, she'll still have her feed at 7pm , go to sleep at half 7 then have her bottle at 11pm, then she'll wake up around 2-3ish & not settle back off for longer than half an hour, but is not hungry as she won't take her bottle till about 6am.
She has her teething powder after her last bottle , as she seems like she's teething, but I've tried everything to try & get her to sleep through the night & nothing's working.