Hi mama! I haven't personally gone through GDM with insulin, but a few of my mum friends who did say their babies were born healthy and normal weight, one friend delivered a 3.2kg baby, another had 3.4kg, so hindi sila malaki despite the insulin injections. The important thing talaga is that you're managing it with your OB, kasi controlled blood sugar during pregnancy is what protects baby. I'd definitely ask your doctor about expected birth weight at your next visit kasi based sa your specific readings, they can give you a better picture. Hoping for a smooth delivery for you, mama!