Weight and breast feeding

Is anyone else have a really hard time loosening weight. I haven’t lost a single pound ( haven’t gained one either) I don’t do a lot of excise really nothing. My little man is still weakening up 3-4 times a. Night. I am 9 month PP. I try to get a nap in. He is my 4th the first that doesn’t sleep and also the first I was able to nurse this long. I know I need to exercise more but my energy is just enough to keep the house clean cook run errands and keep everyone alive. I don’t even have the energy to do the fun things. Please let me know I’m not alone in this