How high with ami before you move on?

I haven’t posted in a while…not because I have been symptom free, but more just trying to live life. I have been on ami for 2 years and have slowly titrated my dose to 50 mg. once again my symptoms are increasing and I am not sure if a dose higher than 50 mg works with the ami. Have any of you went above this dose and seen improvement. My drug combination has really worked for me so I would like to stay with it…
Thanks!