The light is definitely gonna be a source for stress if it’s considerably brighter. I recently got some new aqua illumination leds and even at 25% they are considerably brighter than my old lights and I needed to acclimate my fish to the new lighting and did that over the course of a month (perhaps overkill on time frame). And a change in food is definitely gonna be a good source of stress may have been easier to mix some of the new food in with the food you were previously feeding in small increments and then wean him off of the older food and onto the newer one.
Don’t stress - over reacting can cause more damage so be patient with the feeding and Try shorter periods of lighting and gradually increase those periods of time as you see his stress level reduce and he becomes more comfortable. Don’t know how the new top of the tank would impact his stress level.
Don’t stress - over reacting can cause more damage so be patient with the feeding and Try shorter periods of lighting and gradually increase those periods of time as you see his stress level reduce and he becomes more comfortable. Don’t know how the new top of the tank would impact his stress level.