Thanks for all the advice.
I will try the advice on what to feed Momma for sure, as a supplement or snack. When I realized she was pregnant, I started feeding her canned kitten food, and dry kitten food. When she was alone with the one kitten she ate 1 can a day, but now she is eating 2 cans...
I started feeding a stray cat about 6-7 weeks ago. She snuck in a small opening in a dock door in a warehouse I have. She is pretty social, and once she got to know me a bit, affectionate. She came & went for a bit until I fixed the door, and seemed content to be an inside cat, the warehouse...