To wet or...not to wet...forage?

You can just spray it to wet it down. You just want it to be wet enough to easily pass through the esophagus. Because it is forage and not pellets, he will chew it longer which prompts secretion of quite a bit of saliva which also lubricates it. If you do decide to soak it, 15 minutes is plenty of time to prevent choke but not remove too much of the nutrient value. Be sure to dispose of any excess water as it is considered to be organic waste comparable to sewage. If you use a hay bag to immerse it, it is easy to lift it out of the contaminated water and let it drip dry a little before it is fed. In the US, the EPA requires that water contaminated from soaking hay not be poured down drains.