We think we have it all worked out and then something new happens and she is more demanding at night.
It does sound like she may be in a developmental leap, these affect sleep and make LOs more clingy and cranky

A bottle at BT at this age is fine IMO

I think you may need to wait out those top two teeth then reassess, they are really painful those top front ones (our worst with Z!) and can really make them miserable. x