HI, My Noni Is 91, She Has A Few Days

HI, My noni is 91, she has a few days with good bowls then a day of constipation, she does drink pear juice in the AM with her breakfast (egg, 2 waffles, strawberries, yogurt) Then the occasional smooth move tea at bed time. She breaks routine a bit with both. I try an get her to drink a lot of water too….I am sure that would help balance it?? Any suggestions