I’m thinking she is about 8 weeks pregnant. You can feel and see the kittens move, she’s very round, her nipples have gotten big, her appetite hasn’t dropped, and she lets you pet her more rather than moving away from us like she used to do.
Hi there! It’s always kind of hard to tell from pictures, but once you can start seeing movement, then it’s usually about two weeks left. The average gestation length for cats is 64 days, so your 56 day estimate seems to be on the right timeline.