Kitten feeding off of non-momma cat

Hi, I recently adopted a 2 month old kitten and a 1 year old cat. About a week ago, I noticed the kitten was feeding on the other cat. As far as I know, the kitten is not her kitten. I called the shelter to ask about if she had had kittens. They told me that they couldn't be certain but they remember her having kittens shortly before being brought in. She has been spayed and her milk should be drying up, but the kitten insists on feeding on her. He was eating dry kitten food at the shelter and now eats both. Is there anything I can do to wean him off her, I have tried wet cat food, which they both love. I am just concerned that she will stop producing milk and he will keep trying and cause her to have mastitis. Any advice?

You can have a body sock on her.   Make a sock, holes for legs and the behind.  Vets do prob have such too, as alternative to e-collar.  Although theirs is not for free.

Otherwise, some suckling is normally no problem. Here you want her to dry up...

Good luck!

There's really nothing wrong with the kitten nursing on a cat that isn't his mother. As long as he's nursing she'll most likely still be producing milk, and even if she doesn't have milk the kitten needs the comfort. Two months is really too young to be taken away from his mother, but in the case of many rescues the mother isn't around any more. She'll wean him off herself when she's ready. If she doesn't have enough milk for him, he'll just eat more of the solid food. You can weigh him a couple of times a week to be sure he's gaining weight.

Mastitis is usually caused by the milk ducts being blocked, not by kittens nursing when there is no milk. Keep an eye on her, but I don't think that's something you need to be too concerned about.

I agree it is not something to worry about, but I would keep giving them wet food because it is much healthier and it is easier for such a young kitten to eat. Also, it may just be a comfort/affection thing my 16 week kitten still likes to try to nurse on me when we are cuddling. If the older cat doesn't mind I think it is pretty sweet they are bonding like that.

I took him to the vet for his shots today and I asked them about it. The vet said that he would discourage it but if it is not bothering her to just make sure he is eating food too. He has started doing it less except for naptime, and it is too cute to stop because they cuddle. They have bonded well. I guess I am just overworried about the situation because I had a cat die of breast cancer a few years ago and these are my first kittens since.