It just keeps getting better IMHO. It looks much more relaxed and filled out in the last pic. It appears to have lost some zooxanthellae, but that's to be expected when adjusting to brighter lights, and nothing I would worry about. I would keep an eye on it late in the photo period. If it starts to close up an hour or more before the lights go out, I'd slightly shade the coral, or reduce the photo period. You can feed it as often as you like. If you fed one mouth today, I'd at least skip a day before feeding that mouth again. Healthy elegance can "survive" for long periods of time without feeding. IMHO, they do much better when fed regularly though. When I have time, I like to feed several times a week.