Come on Kris we just can’t do the woulda~shoulda thing. Please don’t do that to yourself. We’ve all been where your at. There’s just so much we don’t know until we realize we just didn’t know. It’s a tuff lesson to gain wisdom (that’s different). Hang in there. Your situation was on my mind all...
I’ve been looking on the internet for comparables to corid. Even homeopathic. Wish I was more familiar with Canada. You might be on to something by asking your cat’s veterinarian. I’d follow any advice they would give. Hopefully they’ll give you guidance on what you could buy.