Save Grimm the humongous chunky chungus

This is Grimm. Grimm is my best friend in the entire world. Half bear half mermaid. He is also a distant relative of the creature of the black lagoon. We go everywhere together. His favorite activities include swimming afters sticks all day and grubbing on tasty food (usually my food, especially my cheese when  I'm not looking). He is the most loyal and sweet companion one could ever hope for. 
Recently, on our way to a swim spot, my friend's van brakes went out going down a hill at about 60mph. Luckily my two friends inside were alive and have no broken bones. However, Grimm was not so lucky. 
I have taken him to the vet where I later found out he has a fractured hip (an acetabular fracture). His femur and socket are in critical condition and he can barely walk. Grimm is being kept on pain meds and it's important that he doesn't move.  In order to fix his hip, he will require a Femoral Head Ostectomy (FHO) surgery. It is not a simple surgery and Grimm will need a long recovery time. The surgery is expected to run up to $4000. But if I can at least make enough to pay the down payment ($1800) that would help out immensely. I have been trying to qualify for grants to help cover the costs but it is not easy. I've never had to make a gofundme before but I'm hoping that this can at least cover some of the expenses. Times have been really difficult for everyone and feel bad asking for help but anything and everything helps.