Shedding is a process. How long it takes each snake can vary. Typically they will get a pink belly, then a few days later turn blue, stay blue and "milky eyed" for a day or two, then clear up, then within the next few days, shed.
Soaking them is not recommended at this stage of the game. That is reserved for stuck shed, as soaking can rob them of essential oils needed for a proper shed. Next time you notice pink belly, just bump your humidity to 70% until shed cycle is complete.
I would leave your guy alone until he sheds, as the soak probably stressed him out too.
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