I'm hoping they figure it out before egg time.
Don't hope, do something about it.

It's really rather easy to modify this behavior.
It's a bad habit that needs to be addressed before it becomes ingrained.
Block the nests off for the next few weeks so they
can't roost/sleep in the nests.
Make sure your roosts are higher than the nests by about a foot,
they like to roost as high as possible.
Then when they get closer to laying age,
unblock the nests(add some fake eggs) and see what happens.
Hopefully they will have made a habit out of sleeping in the roosts.
Because I add chicks every year to my laying flock and I
integrate them young, I rigged a hinged nest cover that's easy to employ and is always there when I need it. Close it up an hour before roost time, then open back up after dark when I lock up. Easy-Peasey!