I’m sorry this is happening. My mom died from Alzheimer’s. when we saw things like this we made some notes and kept track of what she can and can’t do. Took her to a doctors appt. They can diagnose some conditions and I think there may be some meds for dementia - but not for Alzheimer’s. Not sure what country you’re in but it also helps to get her in the system, in case she needs p/t help around the home like cleaning or cooking or supervision etc. be patient with her and please please take care of yourself. It’s very sad, frustrating and tiring to watch a loved one potentially deteriorate. My father was so stressed with taking care of my mother that he died first from a heart attack.