Please Help Arlo Get an MRI and Treatment

This is Arlo, my precious five-year-old beagle retriever mix. I adopted him as a rambunctious 1-year-old. It's crushing to see how much he's struggling when he's usually such a sweet and energetic boy. He has given me so much unconditional love and support and it pains me that now that he needs it, I cannot do the same for him.

I've used all my savings on X-rays, consultations, and treatments, but nothing so far has worked and he's getting worse. The vet says the next step is to do an MRI to see if there is any neurological damage and continue his arthritis treatment. The MRI itself can cost between $1500 - $3000 and after that, we still need to figure out a treatment plan.