Thank you for the update! That's fantastic that he's doing so much better!
As long as he's primarily getting a wide variety of veggies, including leafy greens and yams, some fruit, some good quality pellets, and a few nuts daily or as training treats, then seeds aren't really a necessary part of the diet. Several of my flock of 13 actually don't get any seeds. This decision was based upon researching species-related diet recommendations. If the diet is widely varied and fresh, even pellets aren't truly necessary. After all, birds don't receive machine made pellets in the wild.
For other great ideas for evidence based diets, look up Dr. Jason Crean. He specializes in avian nutrition and is very well known within the avian community here in the US. I've learned quite a lot from his teachings.
Please continue to keep us posted! Oh, as for the infrared lights, I'm not an expert, but don't believe it should be a problem. Perhaps someone could confirm?