Load the gun with one round in the chamber and a emty magazine inserted.
Point the gun downrange, lying at a surface that doesnt scratch the gun.
Fire, using two fingers only.
If it the slide locks back, it would have reloaded properly.
The only reason for a gun to not work with "limpwristing" is if a too hard recoil spring is installed.
A slightly softer recoil spring will allow the gun to function with a less firm wrist.