Son does not like sleep sack

AB

I switched my almost 4 months old son to a sleep sack last night and he did not like it. Woke up 3 times in one hour crying so we had to switch him back to his swaddle and he was fine after that. Anyone have any suggestions on what I should do ? He hasn’t rolled over yet but the reason I decided to switch to a sleep sack is bc second half of the night he would try to break out of the swaddle.