Ambien Addiction

I take Ambien, I have reduced my dose to 1/2 a pill at night, but I still OFTEN get up in middle of the night and eat, or surf the internet (I find bizarre chat transcripts the next day), and once or twice, I know I have had sex I can’t really recall happening. I am dependent on it to sleep now, if I do not take it, I do not sleep for days, or maybe sleep 2-4 hours for several days straight, until I take one and then sleep a whole sleep cycle (6-8 hours generally). I was prescribed them because my nightmares are so bad that I was avoiding sleeping. I know I still have the nightmares, but at least I do not wake up in a panic from them anymore, and I do not remember most of them. I also take Temazepam for this, WITH the Ambien. It’s a pretty heavy sedative cocktail.