12 months off on propranolol……sleep comes and goes

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So, 12 months off a 3 month taper…..was on .5 mg Xanax daily for 9 years. My sleep will be good for 3-4 weeks…..still get up several times during the night but getting 5-6 hours……then I’ll get hit with a few days of 1-2 hours and last night was zero…..haven’t had one of those in a long time. Only medication I’m on is 40mg of propranolol for blood pressure……anyone have experience on this med or other meds while recovering from insomnia? I’m wondering if this is hurting me…..or causing  issues.