Support Harvey's Urgent Knee Surgery

We rescued Harvey from a rescue 5 months ago. We just became aware that he is in need of a surgery to put his patella back in place along with an ACL repair. There’s no way we can afford this. I already work full time but am starting a night job next week to hopefully get some funds for this surgery. All we want for Christmas is for him to get the help he needs. Anything helps… thank you so much. Please message me if you know of any other resources I can use. My pet insurance isn’t valid because I got it after we took him to the vet for his knee. I appreciate any donation and any advice.