Help with final expenses for Java

We are doing another go fund me for my grand dog Java, we had done one before when he needed to have an ear ablation due to cancer. Java was doing well for awhile but now is not doing well. Haven't shared much with anyone because we don't know exactly what is going on and it's hard to talk about. He can barely walk, not eating right, fever, etc. He's in alot of pain and is on meds. He's been to the vet several times now and we are still trying to figure out what is wrong so he can get the help he needs to be better. Java needs expensive scans ($1600-$2400) to be done to try to figure out what is going on and help him. This is going to cost alot of money ( mondays consult appt is $235)and the recent vet bills were alot already. If this can't be figured out then the vet is recommending the worst and we can't allow that without trying. Java is still young and is such a good dog. The kids are devastated to even consider losing their baby. Please any one that can help with anything at all it is appreciated. If you can't donate please share. Thank you