That sounds like a good plan. Hopefully it gets better, do you know how many holes he made with the 300 zaps? Is that what's causing the halos and light sensitivity? I researched the pros and cons of iridotomies thoroughly here on Mayo and other places before I decided to just be monitored. My glaucoma specialist said I may have had the narrow angles most of my life. She said that if anything changes, we'll think about lens replacement (my wish) even though I have teeny cataracts now they can still do it and it opens the angles. Please update here in a few days. My heart feels for you.
As for your other post, yes, some people have a lot of trust in their doctors/eye doctors. I went for 3 consults and chose the Glaucoma Specialist I felt the most comfortable with, who didn't threaten that I'd go blind, didn't push the iridotomy on me, and is working with me. We have a very good relationship.

Please don't beat yourself up for what happened. I have a good feeling you'll do what's right and find someone who can help you if your eye doesn't improve. Hopefully it will for Christmas.