Hey, welcome to the site! You have a very pretty little pastel there Usually it is suggested not to handle baby BPs when you first get them. It's best to let them acclimate for a few days (some say a week), and then try to feed. Once they have fed a couple of times then you can start handling regularly. If you have a strong feeder, it's fine to hold them daily, but if they start going off food, then it may be stressing them, and a stressed BP doesn't usually eat very well. Of course many other factors can cause a BP to go off food, but stress is one of them. I usually hold my girls daily (for about 15-30min or so), except when in shed, and not the day of, or the day after a feed. It's certainly not required to hold them that much to keep them tame, but I enjoy holding them.

Good luck trying to feed tomorrow. If he doesn't take it don't be discouraged. I would try again in 4 days or so, and don't handle in the mean time. In your pic i wouldn't say that he's in striking position, more in a recoiled position, probably a little uneasy, but it's hard to say from a picture.