Sorry for the late reply. I didn't see your post earlier.
Yes, the other voltages can be down-regulated to their former values. But the difference is small so that using low drop-out (LDO) regulators is a must. Depending on how accurate those other voltages have to be and for which purpose you want to use them, dropping them with series diodes may also be good enough.
If you'll explain what you want to use the various voltages for, and the currents involved, we can work on trying to find a satisfactory solution.