I ate it everyday (3-4 big spoons+milk) for 1 mth from 6.5-7.5mths. BB grow from medium size B to bigger than average BB. I have stopped eating after the 1 mth.
People said pregnant mums can eat bird's nest at the later stage of pregnancy.
My BB niece sometimes also eat bird's nest. She started to eat when she's abt 6-7 mths old.