No swaddle, no sleep sack (2 months)

LO decided tonight that he doesn’t want to sleep in his Halo swaddle. As soon as I zipped him up he went crazy. I took him out and he fell asleep in his jammies in the bassinet no problem - is that okay? Does he need a sleep sack? He didn’t seem to want any of that. He is warm and comfortable I can assure that but wasn’t sure if he needed a sleep sack of some sort