Hello again, I really wouldn't worry right now because he is just probably adjusting to new surroundings. Just keep trying and if he was eating good before he should start again in the couple days. Rubbing under their bottom lip with the food will sometimes get a reaction, or with my guys when they were small I found if you touch their front foot with it they will strike at it. They don't all react to these things but there things you can try. Did you try feeding him during the day or at night.