"Congratulations"You just slowed down the shed by feeding them "3 days ago"- do not feed snakes when you know they're in shed. I'll say it again: digestion requires good hydration & uses more water from the snake's body to accomplish, & guess what? So does shedding! In order to shed properly, a snake's body secretes moisture (water) between the old & new layer- that's why a freshly shed snake-skin feels damp. Get it?
By feeding your snake you've made a stuck shed much more likely- and-or a regurgitation of this meal if the snake's stomach can't get the job done. Why? Because there's only a limited amount of hydration that's available for either task. You just made both tasks harder for your snake.
No, I wouldn't soak them right now- too stressful-but you might try misting periodically & keeping your fingers crossed. Shedding takes as long as it takes- the first thing you need when you own a snake (besides the money to buy one) is patience & understanding of snake physiology.
Remember that in the wild, snakes "in shed" do not eat. Maybe that's not just because there's no "room service"? It's because everything takes as long as it takes- & they don't multitask all that well.