I work long shifts at a hospital and wear soft contact lenses. I wear these for 15 hours a day 3 days a week. I then wear my lenses a few hows on 2 other days and try not to wear them at all for 1 or 2 days a week. Is this ok for my eyes to wear them for 15 hours 3 times a week? Thanks

Yes absolutely, contacts that are soft are meant to be worn for 18+ hours a day. If you end up feeling some pressure in your eyes or they seem dry just go a day without, you should be fine though with the time you said. Good Luck!