She had the heat exhaustion/stroke on a Sunday. I took her to the vet on Tuesday afternoon and they started IV. She started having watery diarrhea on Thursday after not eating, (She did not eat that whole week) and only lots of fluid. She was getting IV fluids Tue, Wed and Thursday and I bought the new food and gave it to her Friday night, and she has eaten ever since. That was three weeks ago now. Her stool firmed up after a couple of days on the new food, and has been normal until Monday of this week, when it started getting loose again. After she started eating, I was feeding her small amounts, 6 times per day and the amount was according to the bag (about 3 1/2 cup), but she kept asking for more (once she became her self again) so I gave her some more. She has never been one to eat, just to eat. She eats when she is hungry and she has left food in her bowl. I am not free feeding, we are on a set 3 times per day schedule at the moment.