When I use the term redirect, I mean have toys and chewies that are easily accessible and can be substituted immediately instead of the puppy biting at you or your clothing. Though restraint, picking up, can break the pattern of the behavior, it would really help if you can help teach Jabari what is appropriate behavior.
What toys and chewies to you have? How does Jabari respond to them? Do you use interactive toys with Jabari? Kongs, Stuffed Bones, or Busy Buddies?
Are you working with Jabari on skills like a down or a sit that you can ask him to do before he reaches such a level of stimulation that he begins nipping? Having treat jars placed strategically around the house can really help. That way you can reward him when you see him chewing a chewie or playing with a toy. You also have them handy to redirect behavior using basic obedience commands and reward the good behavior.