Heh, no worries, it seems like you have a good idea what to do now.

Distilled water can be used in spray bottles. Lots of people do that because it doesn't leave buildup on the glass. I notice that elsewhere Josh's frogs recommends "conditioning" the water, that is, putting electrolytes and minerals into the distilled water. That seems like a little extra work, but some people have bad enough tap water they want to do that.

With an amphibian's porous skin, distilled water can draw minerals out of them. This is the article I always direct people to about distilled water.

Like I said, though, it seems like you've got a handle on what to do, hope your frog feels better and starts eating soon.