That's about the time I take it. If for some strange reason I am up later, taking it that later does help me....weird I know.
I am awful about water. For many years I never did. Ldn helps me with that. So I dunno about cells not absorbing the water because I think I drink plenty now....or I think I do.
Have you tried coconut water? I don't drink the plain one unless I mix it with another liquid. But I have tried the one with a splash of pineapple juice......but oh so expensive! I bought some plain to go in my smoothies and I almost died at the cost.
Keep up the fight.