I feed my frogs using tongs - well, chopsticks, actually. That way I can monitor who gets what and how much. If wink won't take food from tongs, you may need to put him in a second container so he can eat and regain his strength. I wouldn't transfer him back and forth for feeding, just let him live alone for a few days. You could also try lightly dusting his crickets with Fluker's Repta+Boost to boost his appetite if it has diminished. Get well soon, Mr. Wink!