not that I know of. you can try going to other camps outside the hub, rest to night time and then come back I guess. but I think you would still need to wait a little after you get back to the hub to actually catch the preformance. also, I think the diva buff is just one random buff from a list of minor buffs that would get overwrite by normal food/medicine buffs, so honestly it's not that big a deal for the most part.