I am babysitting an 8 month old python (male) He's normally a great feeder, put F/T into his enclosure via long tongs, 5-10 seconds, smells and strikes, bang no probs.

Last 2 times though he has sensed food but misses his strikes and cant seem to see it/find it even if i do the zombie dance right in front of him, or if its left on top of his cave inches from his mouth, any advice?
thanks scott