Your technically supposed to wait at least 6 weeks before dyeing it again to keep from damaging your hair. If you've bleached it I would recommend waiting the full 6 weeks because bleach kills your hair follicles. I never listened to that rule & it killed my hair & I couldn't dye it for awhile because of it. But if you don't want/can't to wait the complete 6 weeks I would wait at least 3.
Unless your like doing a weird color like pink, blue, red. Then those boxes usually give u the bleach in it that u can use & then dye ur hair the weird color right afterwards. I've done that too. The underneath of my hair was pink & the top was black Llike Nicki Minajs in the "My Chick Bad" video.
I'd just not wash your hair for a few days, let it get oily instead of dry. Wash it, then dye it.
I can't, I have school Monday and I can't go to school with oily hair :/