First of all, Bummer on the gun issue!! Where are you?

Second, dont use alcohol anymore, its just bad for leather in general. Any solvent will pull the oils out of the leather and its hard to get them back in. Topical conditioners can only do so much. If you want to shorten dry times simply put the sheath under a fan, no heat, as it will have the same effect as a solvent.

Soak the leather in warm, not hot, water and mold away. Simply wet the leather till its pliable, dont over soak as this will make the leather floppy and non responsive. If you over soak just set the leather aside till it lets go of some liquid and becomes pliable. Practice will show you the way here, trial and error are the only way to learn on this. Mold the leather to the knife and very (insert VERY) carefully remove the knife and set aside, you can now work the leather back into place as it looked before you removed the knife. This is why I avocate pliable leathe instead of floppy leather to work. Floppy leather wont stay in place after the knife is removed. DONT leave the knife in the wet leather any more than a few minutes, even coated in plastic it isnt safe, there is NO need to leave the knife in the sheath till it dries!! In ten years I havent left one in the sheath near that long.

Lastly, best of luck and dont let em take your knives away!!!