I have been on Ambien (zolpidem) cr the last 9 months and the ir the previous three. How do I wean off of thr cr w/ it being con. Rel.? Can I cut the pill in hal

See doctor. Let your doctor decide about weaning method.
Do not divide. Typically you should never divide, crush or break sustained release medications. If you feel a need to wean off of this medication have your doctor switch you to the generic rapid release form of it and titrate this way. Get pharmaceutical grade lavender and breath a drop of this from palm of hand; place drop on cotton ball under pillow case and it is as powerful as Xanax (alprazolam) or Ambien for sleep.
Ambien CR. Do not crush or cut Ambien CR. Your doctor can assist you with coming off the medication.