Aww sayang, I feel you, morning sickness during Puasa is really tough! A few of us went through similar loya masa trimester pertama, and honestly the weight drop is stressful tapi it's quite normal.
Okay, so jangan paksa makan heavy carbs especially pagi-pagi kalau loya, focus on small, frequent snacks instead like crackers, fruits yang light (watermelon, apple), or even ice chips kalau membantu. Ginger tea and vitamin B6 memang helped a lot of my mum friends, and someone in my mum group swore by eating something light sebelum bangun dari katil, even just a biscuit or toast. Since doc dah bagi gastrik ubat, do check dengan dia jugak if you need anti-nausea supplements, they sometimes boleh prescribe something safe for baby.
Take it easy on yourself lah, nutrisi akan terpenuhi even if you're eating less for now. Your baby is still very small and tak butuh banyak extra yet. Wishing you all the best, and do follow up dengan your OB on the weight loss and mual, they might have specific tips for your situation!
Faain Yusni