Hey man, that's great, I'm glad you got some food in the little booger.
I understand what you mean about provoking a biting response. I rub the end of worms of my frog's lip, but I've found the corners of his mouth are very ticklish, and if I rub there, he turns in a 180 degree tank spin I call it, and refuses. He will try to jump out and try to climb up the corner to refuse. BUT, if I rub it on the front of his mouth, it doesn't seem ticklish, but it DOES seem to make him angry, then when he bites, I just move away and when he realizes he has a worm in his mouth, he eats it. I just got a big one down him with that method right now.
It's stressful too be forced that way but they gotta eat. I really hope Lunchbox improves!