I'm going through the exact same thing right now so I sympathise,risperdone messed up my sleep cycles and caused me to be entirely dependant/addicted to it for sleep.The book will not help at all,or any of the regular advice this is not regular insomnia it is Insominia entirely caused by the med,the body forgets how to sleep without it and there is little you can do.

In my case the med has also made me entirely constipated I have no choice but to come off it and yet if I even try I don't sleep which leads to visions etc.Cant go to the toilet,can't sleep - aren't these drugs just wonderful,yay for western medicine.

I really wish I saw a shamanic healer about my visions and problems.