Emergency vet bills for Sol

on the 14th of February i got a call saying my horse, Solly was down and didn't show signs of getting up. We rushed down there thinking he had colic. Turns out he was just severely lame in his front left. The vet came down & ruled out any breaks. She thought it may have been an abscess so she treated it. Today (15th) the abscess still didn't show so we had the vet come out again. He believes it is an abscess but it is hard to pin point where it actually is.  He gave us some bad news saying if there is no sign of improvement by Monday then he will have to be put down.
The funds are to cover the emergency vet fees as our insurance doesn't cover it unless its injury (which its not)
Solly is my heart horse and i hate seeing him in pain and suffering, i've known him nearly 2 years and owned him just short of 8 months, i've seen him go from a scraggly field ornament to a horse that can be ridden.
I cant begin to express how grateful ill be for every penny donated, i will even do art work for some people to say thanks.

*I can provide screenshots of the vet bills on both days