I have a 4-5 month old Bearded Dragon that is acting aggressively. He is in a 20gal long currently where temps stay around 80-90 degrees. When ever I approach the enclosure to feed him or give him water, he gets slightly darker and just stares at me. And today after I gave him crickets and meal worms, he puffed up and showed my is beard, although not black. He won’t let me hold him (he either runs away or jumps from my hand) and he will not eat from my hand. I’ve tried just petting him and talking to him, and just leaving him alone for a couple days. He is very jumpy and skittish. I know he’s just a baby but I dont want him to grow up to be aggressive. Any advice? Thanks in advance!