Do sleep blankets help?

If your little one has slept with a sleep blanket or something like the nested bean, does it help them sleep without waking a lot? My little one is almost 3 months and even though he gets swaddled by dad, I found that him sleeping with me helps him sleep longer and better without waking frequently. The downside to that is that I’m such a light sleeper with him in the bed that I never fall into a deep sleep so I’d like to try to get him to sleep in his pack n play more often. He sleeps wonderfully on his belly for naps but I’m not ready to let him sleep on his belly at night without supervision.

Please don’t comment if you’re going to judge on him being in bed with me. We follow the safe sleep 7 to do everything to minimize SIDS. Everyone has their opinion but don’t comment if you’re going to judge.