At that age they usually will go 4 to 6 times a day and once they get a little it will be 2 to 3 times a day. You may be feeding a little too much food if it is still soft. Feed 3 times a day until she gets about 6 months old then you can feed twice a day. I would cut back on her food just a little to see if her stool will harden up a bit. Just have to play it by ear. Plus I'm sure you have had her checked for parasites? If not I'd get her checked as this too can make them have loose stool.