my bp is retarded at eating,

[Neal]

at night could I lay the thawed mouse in his enclosure and leave it all night?

If you are going to try at night, just make sure you set the mouse on something so the substrate doesn't stick to the mouse. I usually feed my noctournal snakes about 5 pm, and I turn the lights off so it's a bit darker in the room. Also like I seen mentioned in another post on here, try to wiggle the mouse a bit so your bp sees movement.