Bless her heart, I have experienced bupe in pigs and bunnies and it really truly does wipe them out. They are so out of it they don't usually get up and eat by themselves because of how zonko they are, as Cherry has had a dose 2 days in a row it might take a little time to come to.
Definitely increase the loxicom dose as I feel comfortable saying that 0.25ml of cat loxicom is most definitely not even putting a dent in it. 0.24ml of dog metacam wasn't really helping my girl so a dose 3 times less probably isn't doing an great deal if anything.
Hold on to hope, I am sure as soon as her med levels get sorted she will perk up quite quickly, as I say my piggie improved over night when I went from 0.24 to 0.4ml dog metacam.
On the poop front, whilst my piggie was on the lower dose of metacam she wasn't eating a huge amount by herself and I had to supplement her feeding and her poops were mucusy and coming out in small bits rather than normal formation, this improved significantly after the dose was increased.
If you have access to fresh grass, I found that my piggie never turned that down and it's got a higher water content than hay.
This is the first time one of my pigs have had this surgery and I was scared witless so I understand how you feel. Keep doing what you're doing and try and push for some dog loxicom at a higher dose.
Good luck x