Aw Mari
Sleeping is more important than brushing teeth in my humble opinion... hehe, so, first let's focus on that you have to sleep and then in the teeth...
If you are falling asleep "suddenly" in a couch... why not brushing your teeth right after waking up ? Will that be easier and less.... hum... a minor bother for you ??
I hate to brush my teeth too if you ask me... Im laaaaaaaaaaaazy !!!
Plus I know I wont kiss anybody during the day annnnnd to be honest, I dont care about caries anymore...
Oh well, let's fight against the brush teeth thing together ok ?
Much love !