My mother is 88yrs old & was prescribed Lexapro for mild depression. she has been taking it for 3 mths. But said it made her feel like a zombie, and the doc reduced the dosage from 5mg to 2.5mg over the past month? She has now stopped taking it completely for the past 4 days, and has experience dizziness, confusion, brain zaps, shakiness, and I was afraid that she was stopping the dosage too suddenly. Should she wean herself off it more slowly, ie. take it every second day? Any suggestions?