Open Question: Seroquel, sleep/bipolarity?

I have recently started to take in the main low-dose Seroquel for sleep, but also a mood stabilizer. I also will pass, I had almost a year now. I heard that, as time goes on Seroquel to start building a tolerance and gradual disappearance of the side effects of sleepiness, I am concerned because it has been working well to reduce insomnia. The question is whether someone in a sleepy side effects subside, from first-hand the idea of taking drugs? Will help, as well as you mentioned, if you are low or moderately high-dose a lot. Any information appreciated.