You need to stop using distilled water for soaking and substrate expansion. It's for misting only because it lacks any mineral content and can leech electrolytes from the frog.

Use de-chlorinated tap water or spring water.

Warm soak to wake the frog. You can do it in the frog's water dish if the frog is not used to being bathed outside the enclosure. Frog should shed it's skin and either a couple hours later or the next day should be fed.

You may need more than that fluorescent light for heat. They do not emit enough to warm the enclosure if kept on a relatively cool room.

Keep is posted.