More so I see my Willow (mom) calling them to nurse. She enjoys it as much as they do. Do I should stop them by now or just let them still nurse. I am going to spay her but I will wait until she is ready.
The kittens will nurse as long as mom allows it. My cat nursed her kittens for 16 weeks at least, even though I spayed her when her kittens were 8 weeks old. The kittens continued to "nurse" for months for comfort, though I doubt she had any milk left.