Reply to Sleep training?

I have 3 kids and 2 of the 3 have always slept on their stomach. My youngest is almost 6 months and will NOT sleep on his back. We cosleep and he will either sleep on his side curled up to me or he will sleep on his belly beside me. He also will sleep in his crib for naps but only on his belly. If it seems to bother you or make you anxious that your little one is only sleeping on her belly, maybe try swaddling her? My son has been able to hold his head up since birth and has slept on his tummy since day one so I see no issue with it. A lot of other parents will try to tell you it’s “dangerous” to have baby on their belly but just as many will tell you it’s dangerous to have them sleep on their back so I think it should be up to you and what makes you feel comfortable. Thank