6 month sleep regression or teeth?

Imogen

My 6.5 month old has been sleeping all through the night perfectly without a feed for a month or two but this week she has been waking all the time for her dummy and giving her a bottle is the only way to get her to settle back to sleep if the dummy doesn’t cut it! She’s already got her two bottom teeth, could it be the top two now?

Or is there a sleep regression at this age?