Welcome to HCM
Aftergoing through your history your problems are 1) High blood pressure
2) Pain because of spine disc 3) Alcohol related.
You have high BP which requires and already started medicine for it also take care of diet to keep salt
Because you have suddenly stopped taking alcohol you have withdrawal symptoms
and insomnia , you should discuss this problem to treating Physician and get prescription to help withdrawal symptoms.
If you have pain suitaible analgesic
will help to pain and if it is causing any neurological deficit then neurosurgery may help.
It is good that you want to quit alcohol becuase that is not treatment of sleep disorder