Medicare/Supplemental Insurance

What has happened to that 12 year old little girl hanging by her knees from her swing set wishing to be a year older in order to be considered a teenager?! Well, her head is going to explode if she has to keep struggling with the uncertainty of choosing the right insurance coverage. Sooo, I come to you for much needed wisdom.

I have several health issues. My chief concern is, however, my diabetic care supplies. I have an insulin pump and a cgm. I already am aware that Medicare does NOT cover my Dex.

Any guidance or recommendations would be very much appreciated.