I would think 2-3 times a day is lots. But there have been stages in my life where 6-7 times a day was not enough..

It depends on the situation.

But at 9 months pregnant, I would think 2-3 times a day is LOTS.
Wow....6-7 times a day - those were the days!!!

Like you said at 9 months pregnant 2-3 times a day seems LOTS ....not sure i'd physically be able to do it more then that anyway, it's getting harder and harder as each day passes.