Short naps

Keven

My baby is 10 weeks old and we are struggling with his naps being short unless he is held. We do swaddle, dark room, white noise. He does usually need to be rocked to sleep. His naps will only be 25-45 minutes. Any ideas on how to make naps a little longer? I plan to sleep train when he’s old enough since i think he struggles with putting himself back to sleep.