Step 1. Relax.
Step 2. Leave your snake alone.
You are offering too often. Wait a full week and try feeding him in his home enclosure. I don't know the size of your snake, and I don't know the size of the 'fuzzy' you are feeding, but you might want to consider feeding something larger. The larger the meal, the longer the snake can go in between meals and the less you have to offer him food.
He was opening and closing his mouth to realign his jaw. Totally normal.
Don't assist feed. Totally unnecessary at this point and will just stress the snake out even more than it already is.
Even if your snake does not eat next week, don't worry. He has not forgotten how to eat and he will eat when he is ready.
Best of luck. Let us know if you have any other questions.