As already said, change your socks! I was 100% Merino wool socks, until I used Alpaca wool socks! Loosen boots too, don't keep them laced up tight. Way back when the Gander Mountain Outlet Center was a thing, they had huge sized coveralls at heavy discounted prices. I bought a couple pair, sewed the legs together basically making a waist height sleeping bag with suspenders. Put that on over everything if dry, take boots off if not, and enjoy my sit in just about any weather.