Refusing bottle at 7months

My Miss 7months has been breast and bottle feed (both ebm and formula) she has had aprox 2 bottles a day and 3/4 on days when i'm working. and the rest are bf.
She ahs never been a huge drinker happy to have between 120ml and 180mls usally 120mls.
At 6months she was moved from the SP26 GOLD onto the follow on SP26 Progess Gold and that made her consipated so we put her onto the SP26 Progess - She flat out refuses to take a bottle from me now where as before this she was happy to.. And is hardly having 120mls on the 2days a week i'm at work and mil is lucky to get 2 bottles into her between 8am and 5pm.
We are blw so its not because she is full because she isn't eating a uge amount I guess more playing tasting etc.
What could this be .. I'm happy to keep bf - but I know milk is still important at such a young age still? and prior to changing formulas she was happy to have 3/4 bottles for mil of between 120 - 180??
Can someone suggest a formula that she may drink? Shes been mixed bottle and bf since about 6weeks and was happy to take a bottle from me before this - all did prefer her boobies

My fellow was mixed fed too from 2 weeks until 7 months when he gave up on the boobies.

After trial and error we ended up on the Heinz 6 months+ for my wee guy (standard, not gold). Prior to 6 months we used S26 gold and Karicare Gold. The progress formula of each of those made him quite spilly - i.e at least one huge spill a day immediately following the bottle (seemed like it all came back up).

The Heinz formula is quite frothy when you mix it up but and I thought that might cause wind issues or something but it hasn't. We have been on it for 6 weeks and the big spills stopped immediately (and actually we get very few little spills now as well).

Good luck with finding one that works for your wee miss.