Exercise always helps me to de-stress and keep my blood sugars lower.

can agree with the exercise thing! find some fun way to do it as well (like for me, i play beat saber because of the music and it's very exhausting after a time). also get lots of protein in your meals, it helps stabilize your blood sugars a lot! eggs, meat, and peanut butter are some of the better choices imo (at least with me). i keep to two meals a day with about 3 small snacks to keep me going. mine usually range in the 200's so i understand the frustration with struggling to keep them lowered properly.