Alhamdulillah, tahniah! Dengan sejarah GDM sebelum ni, kali ini memang kena lebih careful sikit dengan diet, I'd suggest checking with your doctor or a dietitian for a proper plan, sebab GDM history means kena monitor lebih ketat dari awal lagi. Personally, I tried cutting down on refined carbs, pairing carbs with protein (nasi putih + lauk ayam instead of just plain nasi), makan frequent small meals instead of 3 big ones, and cukup minum air, sounds boring tapi it really helps! Other mums I know swear by tracking fruits yang lower GI macam apples vs mangoes, and avoiding sugary drinks sepenuhnya. Share your experience with the doctor first though, sebab every pregnancy is different!