Taking insulin during prenatal phase.

I stay in Thailand for last 3 years. I want to try for a baby but am suffering from type 2 diabetes and hypothyroidism for more than a year. My latest (taken today) Glucose (fasting) reading is 127 and thyroid THS is 3 (both of them getting lower). The previous endocrinologists in Thailand had given me metformin and later empagliflozin to lower my sugar level so that I can try for pregnancy. However my new endocrinologist, whom I consulted for the first time today, prescribed insulin injections while trying for a baby and said that empagliflozin is risky in prenatal stage. I was never told by my previous doctors to take insuline while trying for pregnancy as my diabetes is considered borderline. That is why I am seeking an independent opinion about whether I should take insulin. I have been trying to reduce my weight and I am 40 now, thus I am worried about complications during pregnancy. I am also worried about having to be on insulin indefinitely once I start it. Kindly guid me.