Good Morning,
I am in full agreement with the wise lady that post before me, Lyn. The Lexapro needs more time and it will not be like waking up one morning and just going aha I am cured so don't expect to notice anything like that. You just gradually start to realize one day that the anxiety is less.
The 1/2 Ativan is a good idea and take other half when you get to work.
Take care and stay with us. We support you and care about you.