Your fears are well founded. In fact I'm surprised that your job hasn't already gone to one of our "friends" from the EU or farther afield.
As I mentioned earlier, you need to come up with a plan that suits you, and then follow it through. In other words, follow your dream.
You might have to think again about your "pay cut" comments, though.
Meanwhile, although I have been involved with the technical support of medical equipment myself for over forty years (sometimes directly, sometimes
obliquely, but latterly rather more remotely), I frankly would not recommend it as a career path for anyone who has the inclinations of a "hands-on techie" (aka
geek).
Not these days - meaning it was OK back then when we were appreciated (
tolerated is probably a better word) because we were needed to actually fix the new-fangled (as it was then) kit!
In case you're wondering, my own story is that I was "rail-roaded" into the "trade" whilst serving in the armed forces, and lacked the wits to get out of it as soon as I realised the realities of the "profession"! If I had my time again (I wish), I would have stuck to weapons systems, computers, and other more rewarding technologies (and adventurous pursuits). Oh well, never mind.
Go West, Young Man!
