Dont overdo the sit command with a pointing dog. I made that mistake with mine and whenever he was over pressured in the field he would sit as that had become his default command. Apparently that’s a huge fail in field trials/tests.
Whoa is pretty much the be all and end all for pointers. Get your pup on a pallet or whoa board as soon as possible and get him used to standing still. Then once he’s rock solid start introducing distractions, that’s the key to a well trained dog that’s safe to hunt over.