How much time is it normal for a 25-year-old to spend with his/her mother?

Well, maybe your mother feels lonely. She might be sad because her baby has left the nest (even if you do live close). Going to lunch or a late snack twice a week or so (and the occasional call/text throughout the week) is okay. It would feel like a chore if you had to spend every afternoon and evening with her, specially if you want a social life.

It would be nice if you sat down with your mother and explain to her that much as you love her, you can't spend every day with her now that you're an adult. But you'd still like to come over twice or three times a week. It gives you time to do your own things andto collect enough juicy gossip to discuss when you go to visit her.

Sounds like your mother is developing age-related dementia. Don't argue with her, just remind her that you visit daily, and that you, as a healthy normal adult, have a career and social life to juggle with her needs.

if your mom cant remember that youve been there then shes got a problem and needs to see a neurologist, thats not normal

I don't know what to say about this.

Find another place to live.

weekend is best for have fun