Not OP, but we used a competing product, which is https://owletcare.com/ https://owletcare.com/ It is a foot attachment that basically watches heart rate and

Not OP, but we used a competing product, which is https://owletcare.com/ https://owletcare.com/ It is a foot attachment that basically watches heart rate and oxygen level all night, and freaks out if something is wrong. Only a very few accidental freakouts (like kicked off foot), but gave a lot of peace of mind. Not cheap but seems pretty solid engineering wise.