Hydroxyzine and Cannabis

I just got prescribed hydroxyzine 25mg for my anxiety and insomnia. I currently self medicated with cannabis and I am trying to not do that anymore. I realize cannabis can make anxiety worse but I've been doing it for so long, I need to slowly wean myself off because the habit it so hard to break. I'm thinking it's ok if I smoke a bit during the day and take my hydroxyzine at night. Anyone else have these issues (cannabis use for anxiety and insomnia) and how did you handle it? The side effects that affect the heart really scare me. 😬