Hi TG and welcome back!
I am sorry to hear of your Rx difficulties...and hope that this transition smooths out and you end up with a med that performs well for you!
Lexapro is known to be an activating med...one that many people have initial reactions too...such as restlessness/sleep issues...so you are not alone in this.
Using your relaxation coping skills should help until the s/e's phase out in time.
Keep us posted, so we can keep you in support!