Just wondering how you are doing? I have a history of depression (post-partum) and when my middle daughter was diagnosed 2 years ago at age 10 I felt like I was experiencing the same symptoms. It is very overwhelming to have a 3 month old baby, let alone deal with all the extra issues that come with caring for a child with diabetes. Please take care and don't be hard on yourself. Perhaps you'll only need someone to talk to or if you do need a prescription for anti-depressants you might only need them short-term until you are in a better situation (baby a bit older or more experience with diabetes)
Wishing you all the best, things will definitely get better
JavaH.