Is it bad for your eyes to go back and forth from night vision to regular vision quite quickly for maybe an hour period?

Not bad for the eyes. There is no physiologic basis for the eyes to become strained or damaged in any way as a consequence of normal levels of light (not like a laser beam focused on the retina) alterations. I have no idea what this will do to your circadian rhythms though. Good luck with that one. But the retinas and corneas and lens will be fine.
No problem. Eyes have wonderful neurological and chemical adaptation built in. They will readily accomodate this change in light intensity and suffer no harm.