As long as you are giving him warm soaks at least twice a day, you don't have to worry about him becoming dehydrated. Beardies have the ability to absorb water through their vents when they are immersed in water, so soaking him twice a day should at least give him the minimum amount of moisture that his body needs. Spraying him with a plant mister, or giving him fluids through a feeding syringe, if he will take it for you, is just an added advantage for him.
If he's been eating some veggie baby food for you, for a few days, you can gradually start adding some Gerber #2 Chicken Baby food to it before feeding it to him. If he tolerates it well, then I would just add a bit more to the veggie baby food each day, until you work him up to taking a mixture of half veggie baby food and half chicken baby food. Most beardies really like it, and will lick it willingly off the end of their noses if you squeeze drops of it on there.
If he's been eating some veggie baby food for you, for a few days, you can gradually start adding some Gerber #2 Chicken Baby food to it before feeding it to him. If he tolerates it well, then I would just add a bit more to the veggie baby food each day, until you work him up to taking a mixture of half veggie baby food and half chicken baby food. Most beardies really like it, and will lick it willingly off the end of their noses if you squeeze drops of it on there.