1. Try it and see. Some get benefit from it. You are the healer. See how you do.
2. It would depend on what else is happening healthwise. Personally, I'd take it easy with Terrain and would not consider running it back-to-back.
Also, there is a suggestion that running Terrain for people with serious health conditions is not always a great idea. If it were me, I'd be running Detox Maintenance 24/7 (long term) on remote, along with plenty of support presets.
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