stable? no, I've had d for almost 2 years and I can go from a crazy tend of all night lows to highs that won't go away in one night. it does get eaiser though. You'll start to learn more about his body, you'll know more certinly what made him high/low, and you'll be able to make changes fast to prevent it from getting worse. It will also seem more normal eventually, it took me a whole year to stop counting to the day how long I had lived with diabetes.