Ah, yes, most inkjets need to print occasionally - kinda goes with the inkjet tech.
Working in a service shop, I've seen lots of clogged printers.
I remember working on cheaper Epson printers in late '90s that would have dried ink in the printhead, and would just refuse to clean out. I tried lots of tricks: soaking printhead in 90% alcohol, plus some other types of solvents, and nothing much helped except trying (multiple) test pages, with epson-brand ink. Even that was not always successful. At that time, I recommended doing test page once a month, just to try to keep the ink flowing a little bit. I think that's still a useful tip - inkjet technology is better now than Canon's early inkjets in mid-90s
Worst way to treat an inkjet is to move it to the high shelf in the closet, and leave it there for a couple of years. Good luck getting that one to work again...