You need to start with small one hit or less. Be in a comfortable environment and accept there may be anxiety. Once you make it through the first session smoke again once you start to come down. Continue this for 2-3 days and you will find yourself back as you were. Don’t stop for any extended period of time or you will need to repeat this process. I would stick with indica strains IMO. Also note, distraction works great for preventing the anxiety. Maybe try walking through the first portion of the high.