My two year old must be going through something and idk how to fix it. He has been fighting me with…

My two year old must be going through something and idk how to fix it. He has been fighting me with everything! I tried the one on one time and that helped temporarily until I need him to take a nap or go to bed. He’s been up since 7, it’s now 1:20 and he’s really fighting me with nap time. I took him outside and we kicked a ball and ran around for like 45 mins. I promised him that we could go swimming if he would take a nap. He is the kind of child that NEEDS a nap or he has huge meltdowns around dinner time. Im having such a hard time with him. My older son was NEVER this defiant when he was 2. He loves naps 😔