Help Alfy get cancer treatment

In late January we found a lump on Alfy near his left thigh. After doing a biopsy it was determined that the lump was an injection site sarcoma due to the leukemia vaccination he received from his previous vet. In order to help save his life and prevent immediate suffering from the tumor, Alfy required immediate surgery on 3/5 to remove the tumor. The tumor removal was a success, but the tumor was a grade 3 sarcoma which means Alfy needs radiation therapy to help prevent it from returning. The initial biopsy, CT scan, and surgery have already cost $5,000 and the radiation will be an additional $8,000. I am currently completing my occupational therapy unpaid clinical at Emory Decatur inpatient rehab and will not have a steady income until August/September after I have passed my boards and can get employment. Gavin is currently employed, but having to pay all of this money up front in a 2 month span of time has been hard. Alfy is a really sweet boy and was failed by his previous vet because they vaccinated him in a location that is no longer recommended by veterinary experts which made has made his treatment much more expensive. If they had given the vaccine in the distal limb as recommended  we could have amputated without requiring extra treatment measures, this would have also further reduced chances of reoccurrence.