I know the OP stated they fixed it...
But too much warmth can be cold as well. If your feet start to sweat and get the socks wet.
Learned that with drysuits really quick. The more I bundle up, the colder I got, because I was sweating too much, mostly on the surface. I need to stay ever so slightly chilled to stay dry and warm.
I have that problem sometimes in my feet. Feet sweat and get cold as a result