Fencing Needed So I Can Keep My Dog

I hate asking for help. I hate admitting weakness but I've come to a time in my life where I have no other choice. I am having knee surgery where I won't be able to walk for 12 weeks. My mother is having surgery the day after mine and we both take care of my grandmother who has dementia. I went through a breakup the day I found all this out and unfortunately the help I counted on is no longer and without giving you a long story, we have little to no help with anyone else either. The main issue is that I can not walk my dog once I have surgery. He's a large wolfdog that would pull me down and damage my knee further delaying my recovery and possibly my ability to ever walk correctly ever again. Without a fence I will have to put him into foster care and he doesn't adapt well to strangers. Plus, he's my therapy dog. The thought of going through heartbreak and 3 months of being disabled while trying to hold it all together for my family without him saddens me beyond comprehension. I hope you can find it in your heart to help me keep him. He never leaves my side and I can't let him down now.
I hate taking charity so please let me know how I can repay the favor. Social media shoutout, Mailed thank you letter, etc. I am so grateful for any amout of support.