Hi Claire:
One thing to keep in mind, sort of like a last resort, you CAN tube feed a tortoise that doesn't eat.
I have a desert tortoise here now that won't eat, and I tube her every other day. If you can't do that, then the vet can surgically place a feeding tube into the tortoise's stomach through her neck, and then it gets taped to the shell. When you use it, you un tape it, feed the tortoise, clean the tube with a bit of water, then tape it back onto the carapace.
If it comes down to that, the vet can sell you the things you need and show you how to do it.
One thing to keep in mind, sort of like a last resort, you CAN tube feed a tortoise that doesn't eat.
I have a desert tortoise here now that won't eat, and I tube her every other day. If you can't do that, then the vet can surgically place a feeding tube into the tortoise's stomach through her neck, and then it gets taped to the shell. When you use it, you un tape it, feed the tortoise, clean the tube with a bit of water, then tape it back onto the carapace.
If it comes down to that, the vet can sell you the things you need and show you how to do it.