My mom for 3 months behaving strangely became super paranoid sticking paper over lights and phone camera, has like different moods/personalities at times, chronic indecisiveness/procrastination. Not sure what happened I wasn't with her when whatever made her like that, or could it be quite long time been happening maybe?

Not sure but a psychiatrist (that I end up seeing because my mom refuse to go) said it's not dementia because her symptoms are all over the place. But she won't admit or realize or maybe in denial.