Less than 30 min naps since loosing swaddle

My baby has always taken terrible naps usually around 30 minutes. Then he started to at least get one nap a day that was around an hour. We transitioned him out of the swaddle and it’s been about a week and he cannot sleep more than 28 minutes. I’m losing my mind. Why can’t he sleep any longer than that? It doesn’t seem healthy and he’s turning into a miserable, cranky baby when he used to be the happiest guy ever. I can’t keep screaming into pillows out of frustration 😭