If you get offline tips, then get on cam and spend time on cam with little/no online tips, it's pointless. There's a reason you never see me offer a discount or double-rewards for offline tips, because I never want to encourage my tippers to save their tokens for offline. Having a steady flow while on cam is important in more ways than just camscore, too.
Now if you're going to be off cam for a few extra days and have something special to offer for offline tips during that time, then that's wonderful. Just don't advertise it so far in advance that people "save" for the offlines and refrain from tipping while you're actually on cam.