Lifesaving Care For Rescued Dogs

I rescued these dogs from someone who moved out leaving dogs unattended with no food or water for an unknown amount of time.I myself am on disability with a limited income, paying a mortgage and everyday bills so it’s difficult already but both these dogs were diagnosed with hyperthyroidism and recently the big grey one has congestive heart failure, the medications needed to keep them healthy and alive are astronomical , 1 perscription alone is is over $200 for a months worth, it is called PIMOBENDAN , he takes 2 twice a day, his water pill is $95/month, plus there are 4 more, they are all generic brands plus their blood work every 2 months is $300 a visit, keep in mind they both require bloodwork to check their thyroid, I don’t want to be another person to let these dogs down, they’ve been with me for approximatly 4 yrs, I’m digging myself a big hole here being I can’t work, with that said, I’d appreciate any help I can get, Keeno is the grey one, Kimber is is brown one, these 2 have had a terrible beginning and I don’t want to make their elder yrs terrible to by not being able to provide them with their medications they need to survive. If any of you out there are big dog lovers, could you please help me help them, I’d so appreciate it more than you’ll ever know, thank you ahead of time