Hi @mitch2 welcome to the forum, you will find a lot of support here.
I’m sorry to hear about your diagnosis but DCIS will be eminently treatable. Yes, DCIS is graded but graded differently to invasive cancers. So, with DCIS, the grades are low, medium and high whereas invasive cancers are graded 1, 2 or 3 depending on how aggressive they are. Were you given any indication of size? Size determines what type of surgery you will have, the smaller it is, the more likely it is that you will have a lumpectomy. If you have a lumpectomy, it is usually done as a day patient so taking it easy for a week or so afterwards and doing the exercises that they give you will see you right. I had both an invasive Ductal carcinoma (IDC) with adjacent DCIS (low grade) and had a lumpectomy which proved to be easier than I had imagined. Obviously DCIS hasn’t broken out of the duct so can’t have spread, so please don’t worry about that. When you find out more, by all means come back to the forum to ask questions about our experiences if that would help you to come to terms with your diagnosis.