Hi bunnydream
It could be because he has a respiratory issue currently, that is making it difficult for him to eat. Are the meds helping with his nose at all? Something you could try is to buy a infant bulb “syringe” that is used to suck out gunk from babies noses. You might be able to find one at a local drug store.
It sounds as if he has had dental problems going on for a long time. IF it is progressive dental disease, then yes, it can get worse. BUT it is also said there comes a time where things level out for these rabbits and it becomes stable as they get older. So all hope is not lost.
Did your regular vet assess the dental situation for you? Is that why you know he will need trims?
If they haven’t, I really think this would be a good first step. It may not all be as bad as you think. It *might* not be lots and lots of expensive dental appointments. It could simply be he has something trapped behind a tooth that is putting him off eating. Or, as I already mentioned, his breathing is making it difficult. Not eating is not always due to teeth problems. They are many other reasons a rabbit might lose appetite and eat less.
Absolutely, it could be a mess of dental problems and his runny nose could be linked to that, but first things first is have a vet take a really good look to establish what is going on and then make a plan.
Initally, it might be just a matter of giving him some pain relief to get him eating better, if he has some pain. It doesn’t have to be the vet that is 2 hours away just yet.
Regarding the home situation, are you wholly responsible for the cost of his care? Or do your parents/caregivers assist with this? Have they expressed that they won’t help pay if his care becomes expensive? Or are you reading the situation at home that they wouldn’t be able to. Have you had a conversation with them about all this.
Things might not be as bad as you think. If there does need to be a lot of treatment for him in the future, there are programs available that can help ease the financial burden. And we could help brainstorm some ways to get your rabbit what he needs.
How is he taking to the syringe feeding? Will he eat any of the formula from a bowl? Can you soak some pellets in hot water, let it all cool then offer him that in a dish. One of my past rabbits would not eat hay, so I gave her hay pellets (they were 98% hay). Sometimes I soaked these too. I still do this for my other rabbits if they’ve gone of their food a bit. I add some baby food fruit puree if they’re not showing an interest.
Is he producing okay looking poops? Continuing to get food and good fibre into him is important, as you know.
Sending many {{{vibes}}} for your rabbit.