Mother in law -am I overreacting?

This is a bit of a long one but will shorten it down as much as I can I don’t know why but nearly everything my mother in law does/says annoys me We had a okay/good relationship before I had my baby didn’t see her often but was always okay maybe once a month ish visits ect But ever since having my baby she’s done things I told her not to, she keeps questions our decisions but in the same breath saying we are doing a good job, telling me what we should do when I don’t ask for an opinion, asking us things such as when I am going to stop breastfeeding or have another child after struggling to conceive this one IVF baby, asking when we are gonna wean and when we say 6+ she then tell us they make food for 4 month plus and that she always gave her child rusks in the milk ect, she always holds his head so close to her face, came into the changing room with me when I was changing the child when I don’t think there was a need for her to join me, I can tell she gets annoyed when I want to change my baby, she takes him into other rooms every-time we are up that sets off my anxiety as she kissed my baby three times as a baby after us telling her not too, and there no reason for her to leave the room with him but she always finds a reason and I just think she’s kissing him it drives me insane I got to the point of just following her into the other room I am just at tipping point and she’s the only one I don’t feel comfortable leaving my baby with any of his family or mine I wouldn’t mind 🥲I just feel like she’s obsessed with the baby in the worst way and it creeps me out a wee bit, like she doesn’t even like her son the way she likes my baby 😬 she’s just pushy and overbearing the thought of how much she would kiss my baby if I allowed it fills me with anxiety and it puts me off ever letting anyone kiss him just to stop her cause I couldn’t watch it I don’t know if the way I feel will ever get any better it’s stressful cause I wish I didn’t feel this way We asked her to watch our child for my partner and me to go out for his birthday but the baby should be in bed asleep by the time we are out and her response was it’s fine I will wake him then followed by later I will just sleep in bed with him when he doesn’t even sleep in bed with us, this just set my anxiety off again and now I don’t even want to go out lucky have a camera but if I look and see her waking my child or trying to sleep in bed with them that would be her cut off completely cause I could never trust her🙄 My partner said she said it as a joke but really not funny either of it then she mentioned sleeping with him again when I saw her again My partner doesn’t want to get involved between me and her but I think as it’s his mother he should deal with her the same I do if it was my mum making him uncomfortable Anyone have any advice or experience the same?