Ya you can do the honey, this will help him deal with the pain. But I'm pretty sure you can let him soak in there as long as he wants. I don't think you should handle him unessisarily unless u have to dig to get him out of your viv.

Go get neosporin original, no plus, no pain releif, this will kill him. Apply with Qtip once a day until it starts to scab over. You don't want an open wound. Dry up his viv a little to. Like 55% percent humidity, until this wound is cleared up.
I've seen some pretty bad burns on here, and they've healed up and just left a little fat fold fir a scar. Good luck, keep in touch