Hello,
have you checked his
Uric acid levels?
Also if it is high and you are on uric acid medications, the effect might take few more days to start.
Also if you haven't checked the uric acid levels you should check it first.
Also meanwhile, you can apply ice around the swollen area , it helps in reducing the pain and swelling.
Ice bag or gel pack - 5-10mins/3-4 times/day