1. Right away, pull all frames the bees aren't covering or are patrolling too thinly. Put them in the freezer to save them.
Do this very early morning. You may have a lot of foragers in the field, it will give you a better idea on how many bees there are. They will be calm.
2. Check to see if brood nest (A) has empty "polished" cells or is (B) backfilled with nectar.
If (A), wait 5 days. They may have superceded the queen and she isn't laying yet.
If (B) go get a queen, IMHO. If I have a colony on 5 full frames, it's worth rebooting.
Or if (B) then (C) get a frame of eggs from a friend and take a gamble for a month to requeen. I'm down south and I just had a colony use up 1/2 fat frame of honey !! to make 1/2 frame of drones !! They were emerging Aug 20.