Dock a tot and co sleeping

I was wondering how many mommas use one to co sleep at night?? I’ve been doing it since we got home from the hospital. (I swaddle my daughter and make sure our blankets and pillows are no where near her and she obviously sleeps on her back.)

I thought this was safe for co sleeping but I’ve also read some things that say it isn’t?

Now I’m paranoid and confused as I thought people bought this specifically for co sleeping?

I don’t see why it wouldn’t be safe unless they were too big for it which I could see becoming a suffocation risk but it tells you the ages for each one :/