Leave him alone feed and than start handling.
When doing maintenance or attempting to pick up the animal, observe the body language.
Be patient young animals are defensive however they usually grow out of that phase around 250 grams to 400 grams (granted the stress level is low and the husbandry is optimal)
Finally it's a wild animal so it is to be expected anyone that has not been bit yet either has not own a snake for long enough or does not own enough of them.