Looks like what you are doing is fine in terms of times. There are still 4 milk feeds in the day even though you have a solids snack in there too. Often people switch one milk feed to the solids snack but if your LO needs something (milk) before nap and something (snack) after nap then I see no harm in that. I'd certainly keep the WU and BT milk feeds regardless of what else moves or switches in the day/night.
It's a bit early for milk to be reducing, often when one bottle/breast feed is dropped (or switched to snack) the other feeds increase in size so the overall milk intake is roughly the same. And the solids are in addition to milk rather than instead of milk.
2 feeds at night is not uncommon for BF babies so the DF and NF you have is normal. If you are considering dropping a milk feed anywhere though I'd suggest one of the night feeds. You could slowly reduce it over a week or two and make sure that the day bottles are big enough for her.
We usually suggest that all bottles should not be drained but that when LO has finished there should be an oz or so left in the bottle so you know she's had her fill. You can't really force her to have more but you can be sure to offer as much as she will take.
If the BT bottle is not going so well I'd consider cutting back on some of the solids meal sizes a bit. Either reduce the size of dinner or that afternoon snack (or both) depending how much she's taking. I'd say you do want a good BT milk to help her through the night especially if you want to reduce the night feeds.
Portion sizes on solids need only be quite small. If she is really into her solid food perhaps try more finger foods and self feeding now if you are not already. LOs who enjoy their food are often very happy to have food the same as Mummy and self feed.
Tell me this is a phase... I want more awake time with her.
Of course it's a phase
Before you know it she'll be up for 5-6 hrs at a stretch and you'll be begging her to go for her one nap so you can have a break!!
When LOs drop a nap they are often tired earlier in the evening and BT might need to come earlier for a while but it does tend to stretch out again after a while.