Wow, that is very few symptoms for feline leukemia, I think. Hopefully he wasn’t very infectious then!
I will be praying your other furbabies are ok.
I understand about the tight budget. We will be quitting ‘feeding the beast’ next year - will be living a simple life, paying hardly anything in taxes if we can help it, and will wait for it all the collapse about our ears. Doing a budget to see how much income we need really opened my eyes to how much I am spending on my pets, between health care and premium food (2 cats have digestive issues). We will get down to one-two pets, through attrition. Anything more is just too costly.