Yes, you can sleep while wearing dentures. But it's preferred to remove your dentures during bedtime. It gives your gums and bone a chance to relax from the pressure of dentures caused during the daytime.
If you are undergoing Dentures treatment in Garland, you should not wear your dentures 24 hours a day without good oral hygiene. So, it's Advice to remove dentures during nighttime, clean them properly, and store them in water.