Wa'alaikumassalam! Ah, fast letdown memang bikin baby frustrated, a few of my mum friends kena benda yang sama, memang tricky masa awal-awal 2 minggu ni. Try expressing sikit before latch so the heavy flow calms down, or position baby more upright, and feed one side habis dulu before switch, helps slow things jadi baby tak choke or marah. Kalau terus struggle macam ni, sebaiknya check dengan lactation consultant or GP just to make sure everything's okay dan get personalized tips untuk comfort both of you.