Best way to avoid second sock syndrome in my own experience is to not graft the toes together on the first…just place those last stitches on a holder, and then start the second sock…that way you dont have that FO fix.
Then when the second is finished..you can graft the first..and then the second at one sitting.

There is the first sock of the pair that I am working on right now. ( pictured) I have those last stitches on a peice of yarn waiting for number two to be finished.