You don't say too much about your management, Samantha, so I'll just throw out some general ideas. The best way to get your blood sugar down is to try and prevent it from going too far up in the first place! Once you get up into the stratosphere it's harder to get it down. But should you have a high, moderate or extreme the best ways to manage are to take corrections, being aware of the insulin on board so you don't stack. If you are very high (over 250) drinking a lot of water helps as well.
Having said that, I don't know if you know the basics and have a good regimen. I see you are on a pump. Do you have the book Pumping Insulin by John Walsh. It's very useful. Have you tested your basals to make sure all your rates are correct for the various times of day? Basal needs to be right first before you look at bolus. Then ae you confident of your I:C ratios? If you are running high 2 hours after your meals most of the time than your ratios need tweaking. Many of us have different ratios for different times of day. Do you know how to accurately carb count? You say you are "taking a lot of insulin". What is important is to take the right amount of insulin for your needs.. You also say you are eating healthy, but what does that mean to you? When I was diagnosed I told the cde that "I eat healthy. I'm a vegetarian, eat fresh foods and haven't eaten sugar for years." But I ate a lot of pasta, rice and cereal for breakfast and it was way too many carbs to manage successfully.
Relaxing is important too, you are absolutely right. So while you are working to get your numbers under control, do the things you enjoy so your life isn't just about Type 1!
I'm glad you're okay now. I've never experienced DKA but it sounds awful!