Another vet visit this afternoon (unfortunately not with the most cavy-savvy vet); there wasn't really much of an outcome. Vet noted that Tubs' tummy was quite hard; she seemed worried that the lymph nodes in his abdomen aren't going down.
However, vet also said there was literally nothing more she could do to treat, apart from more pain relief (which he doesn't seem to need right now), due to being on 2x antiBs, pain medication, and gut stimulant. He was quite dehydrated today (my fault for not taking appropriate action for the slight diarrhoea last night), so the vet gave us some subcutaneous fluids to take home to try for a couple of days. Worth noting that his weight has stabilised at around 780g. He's so bony now.
Both myself and OH are really hoping that it's the Baytril that's making Tubs lethargic and unwilling to eat anything.
We're toying around with the decision to take him off it altogether, two days earlier than if we completed the course (he's been on it for 7 days now). The reason we're thinking about taking him off it is that at the vets when he had it via injections, by all accounts he was getting brighter each day and he even ate hay! Now he's home, he's taking it orally and since then we've really seen him decline, with increased lethargy, refusal to eat anything himself, and soft mushy poos.
I mean, that lack of eating and lethargy were present, quite badly, at the start of his illness, but it's now of a distinctly different character -- now he's not interested in anything, even Critical Care off the spoon, and he isn't hunched over, crying, and fluffed up or flat, just weak-looking and not keen to move about at all (no doubt not helped by his bumblefoot).
Does anyone know if metronidazole (Flagyl) would cause the same issues as Baytril? He's also on that antibiotic but we weren't planning on stopping that until the course was finished (at least another week).
The vet wasn't very optimistic today, I think she's trying to prepare us for the possibility of having to let Tubs go... I know it's not fair to let him suffer, but when his symptoms might be caused by antibiotic intolerance I think it's fair to give him some more time and see how he goes. OH and I were pretty devastated after the consult today.