About 4 days ago, I feel as though I messed up. I usually feed my frog from the tongs and he attacks it, but 4 days ago I fear I made a mistake. He attacked the tongs like usual, but then I thought he got some of the food and left a piece. Pulling the remaining wing from underneath, I found out he didn't eat any of it and missed it entirely. As I was pulling it out he tried attacking it, but I took the tongs away so he once again so he didn't get anything. Ever since I haven't been able to have him eat anything from the tongs again, any suggestions on how to fix this? I also haven't been able to give him in multivitamin in quite some while.