I notice that my 5 month old LO sleeps better on his tummy. Any of you let your LO sleep like that throughout the night? Is it advisable?

My baby is 3 months and 2 weeks and sleeps on his tummy. When I lay him on his back or side he sleeps 10 minutes and his up sometimes less and but on his tummy he sleeps well, 4 to 5 hours so I let him sleep on his tummy