My 3 kids were all LOCAH and all diagnosed around age 5.  They were ALL wonderful sleepers until they began Cortef.  When they were in kindergarten & 1st/2nd grades, I remember their sleeplessness.   My kids are now 16, 13 & age 10, and they are now all good sleepers again, maybe it just took a couple of years for them to adjust to the meds!  Lots of physical exercise every day, a warm bath, warm milk, reading, cuddling were all good routines to prompt sleep.  Even if they could not sleep, I still would never let them play or watch T.V.  However, I would let them read in bed while waiting for their eyes to get droopy!!  Good luck!!