On a hybrid or popup it is IMPERATIVE that you keep the tent ends cracked open and run the bathroom fan. You and family breathe out a lot of moisture and it condenses on anything cold. Start with that. If you still have problems, then something under the mattress may help. You can run the furnace to keep temperatures comfortable, or if you have electric hookup, get a small 1500 watt space heater.
A lot of hybrid owners who camp in extremely hot or cold conditions buy Popup Gizmos (PUGs) to help with condensation on the tent ends when cold and help the air conditioning keep up when hot.
Many also put Refletix in their tent end windows.
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10