Update :
Following the pharmacist's recommandation, I've gone down to 40mg for 2 weeks. Then to 30mg for 5 days. Got a call from my pdoc nurse and she agreed that I could even go down to 20mg if it felt right. The symptoms went down gradually since 3 weeks ago. This medicine stays in your body for 126 hours so when going down, it takes a few days to see a difference. I will stay on 20mg for a few days and see if it feels right to go down to 15, then later 10, 5 and eventually 0mg. I've got all the other medication to support me so she's not worried. We agreed that I would call on Aug. 6 (when pdoc returns from vacation) to give them an update and take it from there. Thank you all for your great advice.