I did something similar in 2019, as I intended to spend two years mostly away from the US (but by March 2020 Covid changed that .)
I got an EXPAT medical insurance policy from Cigna. Far lower premiums and much better coverage than my ACA policy, and it would cover me for up to 90 days in the USA each year (that was a benefit I paid extra for in case I needed to return to the US for something major, using my MedJet transport insurance).
IMPORTANT:
(1) the Cigna global policy is/was considered a “qualified” medical plan so when I ran out of my 90 days coverage in the US in June 2020, I could transition back to a $$$ ACA policy on the basis of “life event” moving. (In this case BCBS-FL) with no gap in coverage eligibility
(2). I had set up a UK address at the mail forwarding service ExPat mail, and though it was not my residence it was just fine for BCBS to use to bless a “move” (heck, they want the business so aren’t too fussy!). I used the address for Cigna (though they would accept the address of your first hotel outside the US to initiate coverage!), and to receive a couple of Amazon packages when I was in the UK, but for nothing else.
Google expat medical policies which are PRIMARY, not travel health policies which are generally SECONDARY.
Note: Many countries in Europe now require that you have substantial medical insurance (a remnant of covering the costs of the Covid catastrophe) and, while simple care such as treating a sore throat or pink eye or an infected cut is usually inexpensive, anything more complex like a broken bone can get very expensive quickly.