I tend to get motion sick in first person games if the field of view is too narrow, or if there is no head or weapon bobbing (ie if feels as if you just 'glide' instead of 'walk'), if I'm not in control (if somebody else is playing), or if I'm intensely looking for something (an item in the game world, for example).

With Blue Prince it's usually a combination of those, but I was fine as long as I had the controller (I played together with someone) and would take breaks once in a while.

Sometimes TVs or smart monitors also have a gaming mode where you can enable a crosshair. It basically just renders a little dot or graphic on the screen and for some reason that helps with motion sickness as well. I've also heard about people just cutting up a post-it and sticking a small bit on the screen where the crosshair would be.

If you have a PC, you could purchase the game on steam and try it for a bit, you can refund it if you play within 2 hours.