Hi
I probably wouldn't try to change her routine just yet. It must feel like she is just about to turn 1yo but quite a lot can happen in the next couple of months. For instance at 10 months mine had 2 naps so meals fitted around those, by 11 months he was moving to 1 nap and by 12 months was firmly on just 1 nap per day, which means meal times often change. Not all LOs drop to 1 nap that early though so I wouldn't plan on that either.
If you see she would like more to eat maybe introduce a solids snack mid morning (with the milk or to replace the milk at 11.30) and mid afternoon (there's usually a milk feed around 3pm ish which gets swapped to a solids snack, although if she is eating her lunch and dinner well I prob wouldn't introduce a snack between right now and disturb those meals).
By 12 months her primary food become the solids and I would expect the mid morning milk to have already switched to a solids snack and a sippy of water. Leaving you with two bottles of milk. Many people continue with the bottle for a while after 12 months (some much longer), It is your personal choice. I dropped the BT bottle at 12 months and the morning bottle at 13 months, both went fine, no problems. The BT bottle I switched to a supper solids snack with a sippy of milk prior to the BT routine, then offered his bottle as usual at BT but with less in the bottle. In less than 2 weeks the switch was done with zero disruption to our BT wind down, no tears, no hunger, no bed time refusal etc. Yes he took less milk overall but that's ok when they reach 1yo and solids are their main source of food. The morning bottle I kept a little longer as I wanted to maintain a decent milk intake on that one. Over the next month I split the teat on his bottle, sat him upright to drink, then switched to a straw in the cup/bottle (still holding him) as he didn't take well to a sippy cup for this milk even though he was well used to a sippy for water through the day and for milk at supper time.
Switching to cows milk - you can literally just fill the bottle with cows milk and give it to her unless you know of any allergy. If she refuses it and if it is milk she *needs* (because she still needs two cups per day) then you might want to gradually change it by reducing by 30ml of formula and topping up with 30 milk of cow milk. After a couple of days switch another 30 ml and so on, to get her used to the change in taste. There isn't actually any harm in continuing formula longer it's just more expensive and a hassle to make it.
hope this helps some
