How do I get my 2 year old to stop taking a bottle?

A bit of a back story due was to be still having 2 bottles a day of special formulas due to food allergies and nutrition, until she was 2.

Now she drinks oat milk from a bottle and we can’t seem to wean her off it, her bottles are 3/4 water 1/4 oat milk and she still has then twice a day and will kick and scream if she doesn’t get them.

Will not take milk from a silly cup either, Will only drink milk from a bottle and water from a sippy cup.

Any idea on weaning her off the bottle