Yeah waiting was definitely the right call (not that I was going to do the stock pot idea ). It was after midnight before I got in and I managed to keep it at a soothing temperature and got it to a workable depth. But it was definitely noticeable the hot water was limited so I didn't want to push it just incase someone else needed it. And now I know the later I can push it, the better. But hopefully I won't have to take too many midnight baths before this is over. But now I feel so much better so I am going to try to sleep now.