You might try using tweezers to hold the crickets in front of his face. You have to be careful because if there the small ones it is very hard to do without squishing the crickets but aim for a back leg and dangle them in front of his mouth.
I dont know the honey vs pedialte. I've always just used pedialte. It could take a few baths before he fully perks up. Just make sure its warm water. And I would get a new thermometer as soon as you can. And a hydrometer if you can find it. That will tell you if the humidity is good (though mostly if you have a water dish and mist then your good but with a sicky its always best to be extra sure).