I’m T1D since I was 4 years old and I got pregnant, without expecting it, when I was 27. In that moment my Hb wasn’t good at all and I was informed about all the things that could happen because of that reason. In less than two months I reduced my Hb to 6.2, amazing for me those days, and thankfully my son just had a minor health issue when he was born and after a year he was absolutely fine. Now is a perfect healthy boy, but I was so worried during my pregnancy that I didn’t enjoyed it enough.
So my only recommendation is to make a plan with your doctor with 6 months in advance, have a proper Hb levels and during the pregnancy look so well after you and your baby, managing as better as possible your diabetes to have an enjoyable pregnancy as a non-diabetic mum.
Good luck and enjoy the moment, the time flies. Xx.