Welcome back!!!!!!!!!! It's so good to see you again!!! Oh and I can't wait to see pictures of grown up Krusa and the baby! For the baby, it's most likely a phase. Many times those PetCo babies are culls and they are culled for a reason, I had a baby with the same issue and after a while it did clear up but he still died young. Many babies don't make it very long or if they do make it to adult hood, they are more susceptible to things I find or they still die early.
But continue to feed him, he needs at least three times a day, twice if you absolutely must and yeah, daily water changes will be great for him. You can add in .25 tsp/gal of Epsom salt to see if it relieves him at all, don't increase, just keep replenishing it for when you do water changes.
Leopards: 1:4 Hawkeye, Luna, Astrael, Dorian, Cullen