I know the feeling of being at work and the meds zonking you out. Med adjustments are the worst. Maybe you can break the 10mg. in half and do it in 2 doses, or go down to 5mg. till your body adjusts to it. Ask your doc.
The Ativan is great for anxiety that comes on fast. I had 2mg. Ativan and it's easy to break it into halves or even quarters.
I would take a half when I had to drive home. It was a 38mi. drive, and I would feel the anxiety starting up before I even left work to go home. Trying to get on a good med regime and stay employed is a fine balancing act. Everyone I worked with knew what was going on, as I was on FMLA for 6wks., and when I went back to work, I didn't want to be having symptoms all over the place. Luckily, one of my co-workers had had depression herself, and was very supportive, so it made it easier.
I was on Buspar for about 6mo., but it takes weeks before it works, over the long hall. I would take it at night, as I tried to take it during the day, and it buzzed me up so bad I had to take an Ativan to keep from having a panic attack.

It's okay for long term coverage, but not good for fast-acting need.
I started out with a panic disorder, and was having panic attacks so bad I couldn't risk trying to work. It took about 6wks. to get my system calmed down on meds. I think one has to get it all calmed down before the coping mechanisms work. Just a thought.....
I didn't want to go on addictive meds, and was initially resistive to the idea. My doc told me with the kind of symptoms I was having, it would be the way to go. I was having the agorophobia symptoms, and it was getting too comfortable sitting in the house. My concentration was zilch, and my thoughts were racing. I couldn't even read the first 2 weeks. I don't want to go through that again..... My advice is to get on some meds, live through the start-up effects and work on coping skills... I will all calm down eventually, and then you can go on.......
Jackie