Well, as long as he has a humid hide and a water bowl, the shedding process should run its course, especially since you should already have relatively high humidity in FL. (hey, I was just there 1/13-1/20, it was cold man, but warmer than MN.) In a completely healthy gecko, usually it only lasts minutes, but give the guy a few days before worrying about any stuck shed. (Do not, as one new poster here suggested, mist the gecko directly or anything silly like that. If he has stuck shed later this week, we'll help you through that too.)
Now, yes, most health geckos will eat less or not at all immediately after a shed simply because their stomach is full of shed. With your gecko, it won't harm to try the Ensure, if only to help him keep his strength up for the duration of the shed process. (For instance, if he stops for a while and picks up trying to shed tomorrow, this is seen is sick geckos from time to time.)
I'm not a huge fan of the babyfood, just because you are talking about a cooked protein vs raw alive prey items. Mealworms are harder to digest than crickets (different exoskeleton makeup), so I would be careful there, most recovery "meals" usually suggest blended dried crickets. (They can be found at pet stores, I would never feed the dried crickets, save for this instance... don't know why they sell them and who feeds them to what... anyway...) Milk seems to be acceptable to every animal, at least, it sure is the first thing vets offer any ailing reptile or mammal in my experience. You'll be able to tell if you are really bothering him, they can get grumpy and not cooperate. I see it as a good sign that he is licking food. Make sure you are only bothering him during his normal night awake cycle as well; I'm sure you are, but we've had some people drag their leos out of bed.
As someone else suggested, waxworms are basically bon-bons for geckos. You should only feed as very rare treats as they are VERY high in fat. On the other hand, up to three waxworms a week, say for two weeks, may help this little guy. Very rarely do leos turn down waxworms from tongs... he might be a little confused as to what that squirming thing is, but once they've tasted it they will be hooked. One warning, shed and waxworms will change the appearance of his "deposits" making them lighter in color. Any other changes should be watched.
I would really suggest that you get both geckos tested for parasites at a herp vet. I, personally, think this is the only way you can be sure about their health. Even if you get this little guy up to speed, he may still carry parasites that survived the initial treatment.
Anyway, we are here to help, no thanks needed. Take care of yourself and those geckos and good luck to all.
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0.1 Albino Leo Gecko
0.1 Crested Gecko
1.0 Dear Boyfriend
Departed: Harvey and Spock