Help Shada Stay With Me

Shada is my Mexican gelding. I've had him for 13 years and I have no idea what I'd do without him. His board is $525/month and I'm almost 5 months behind. I'm lucky enough that the owners of the barn will take what I can give them, but I'm worried that their generosity will run out soon. Please help me get my board caught up so I can keep my best friend.