I'm told that i can't take plain water during confinement otherwise the swelling of my tummy will not subside; we are only allowed to take red dates and longan drink. Is this true?

I personally don't touch water since I love red dates tea. My gynae does not believe in the water retention theory. She thinks it's more important that we stay hydrated and helps in milk production too. My friend who continued to drink water and sometimes from the fridge too went back to her Pre pregnancy svelte figure after her maternity leave.