I weaned myself off of lexapro years ago, and actually felt better afterward! Definitely try to do it slowly. While in the process, I tried to "support" myself by *always* eating a breakfast with protein and a complex carb (I generally need this for good neurotransmitter production, but I tend to oversleep and miss breakfast, which is not good) and also with supplements that worked for me, like 5-HTP, DLPA, and a tiny bit of DHEA. And chocolate. There are books I read re. all of this, if you want more info PM me and I can find the titles for you.
good luck!!!