At 9.5 months dd had 3 bottles a day but she was not very interested in one of them (mid afternoon) and it was dropped by the time she was 10 months. She had 2 bottles until she was 1 year old and was off bottles by 14 months.
TBH I would get rid of 2 of the bottles which may encourage your lo to eat more solids. I would work on missing out the night bottle first as your lo doesnt really need it at this age. The one I dropped first during the day was the mid-morning one as dd was losing interest in it - I didnt offer a snack, I offered lunch a little earlier and gave a drink of water along with it instead.
I wouldnt drop them both at once but I would end the night one first. You could either stop offering milk and offer water instead, dont offer anything at all and use pick up/put down or gradually water down the night feed until you are only offering water.
As long as your lo has a minimum of 20 ounces (around 600mls) of milk per day along with their solids, they will be getting the nutrition they need.
hth
Seona