Congratulations! It is normal to have a lot of lows in the first trimester.
I love this book: Balancing Pregnancy with Pre-existing Diabetes: Healthy Mom, Healthy Baby by Cheryl Alkon.
Have you thought about a pump? You can be so precise, and make such small changes. My pump goes down to increments of .025. It really helps with fine tuning.
Have some grace with yourself. Be really honest about counting carbs and giving yourself insulin a few minutes before you eat. Canned pineapple is impossible to count for and give an accurate dose; don’t even try!
I worked with a high-risk OB clinic, because I was also pregnant with twins (they were a surprise!). The diabetes nurse specialist at that clinic was the best practitioner I have ever worked with. If your insurance allows it, try to work with a diabetes nurse who specializes in pregnancy.
Keep us posted on how you are doing!