Polaris is our North Star now, and is visible in the northern hemisphere. Precession has caused the North Star to change over tens of thousands of years, and the previous North Star, Vega, is not always visible to all in the north.
Magnetic north is a different thing altogether, and has moved and flipped many times.
The biggest thing about this is to buy lots of zinc sunscreen to help block the increase in cosmic rays that a reduced magnetic field will allow. And backup all your computer memories as cosmic rays degrade those, too.
Lot’s of sunscreen.... yes.
I have no idea why, but I was guided back in the early 1990’s to build my lower level of my house in ground as a Faraday Cage. Lots of welding and lots of concrete..... Even the 1st floor 12 feet up from the basement floor is 6” of 5000 psi concrete in an overhead pour like a bridge with a welded rebar cage on 16” centers... with fiber mesh and then sandwiched with concrete mesh in the top 2”, all sitting on 16 “ bar joist with steel bridge decking base (I have radiant heating in it as a heat mass it is a 150,000 lb radiator)
I’m not a survivalist... but enjoy self sufficient off the grid farm living. It’s low budget which is freedom.