Welcome @kerland831! I'm so sorry that you have to join the T1 club, but happy that you've found this site. I was diagnosed just over a year ago and the people on this community have been more valuable than any doctor or book I have come across (Ok, Think Like a Pancreas is pretty close).
Don't put too much pressure on yourself to get your numbers perfectly in range right away. It takes a while to re-learn how to live your life with diabetes so just take it one step at a time. Test your sugar frequently, take notes, and you'll start to learn how different foods will affect you. As other people have mentioned, stress, lack of sleep, hormones (menstrual cycles are now twice as fun!), being sick....the list of things that affect your blood sugar is endless, it seems.
I also was determined to take as little insulin as possible in the beginning. But once I spent more time in healthy blood sugar ranges I realized that insulin is my best friend...especially when I get an unexpected 200, feel exhausted, cranky, and depressed and then as soon as that insulin kicks in, I feel like a million bucks in comparison. Once you get more comfortable using it, I think your feelings will change towards it!
That being said, there are things you can do to decrease your insulin needs (but never to completely stop taking it): regular exercise helps increase insulin sensitivity, and because insulin dosages directly correlate with how many carbs you eat, lower carb meals allow you to take a little bit less.
One last thing - it look me a long time to recover physically from DKA. My insulin needs were higher than they are now (and I'm no longer in the honeymoon phase, just to clarify), and I had 20 lbs to regain. DKA is a major disruption to your body (as you've already figured out) and your insulin needs and blood sugars might be a little weird while you recover.
Keep us posted!