use a sleep
positioner wedge of any kind. These are often delivered with
cosleepers (which I also recommend against). Such a sleep positioner or wedge is supposed to keep an
in the correct position (on the back).
But babies have suffocated after
having rolled over anyway and getting stuck between the positioner or
wedge and the bed side.
So use your sleeper as is, without the positioner. See the CPSC report
A cosleeping pad or bumper will keep
your baby from falling out of your
It is easy to use and very comfortable. Simply place it on your bed, it
usually sticks under your fitted sheet or on top. Your body weight
keeps it in place.
No worries about baby getting stuck - there are no gaps at all.