Benzos are effective in the short run, but in the long run they are terribly habit forming.

1mg is a strong dose...if you have not had it before, it will knock you for a loop.

Try this: just take one at night and see what happens.
The higher milligram dose is for muscle effects.

I use Flexeril for muscle issues. One tablet lasts 2 days for me!

I doubt you'll need the Ativan 3 times a day.

Do you take magnesium at all? Magnesium will also relax muscles.

Another thing that helps muscles alot is d-ribose. It is recommended for fibro patients for this reason. It increases ATP production, by enhancing adenosine synthesis. Adenosine by the way is the first signaling substance that starts the sleep cascade. I really like what the ribose did for me.
It is a bit pricey tho. About $35/month. Less using Puritan's once you like it and get more. I used iherb.com Doctor's Best powder.

I have a thread about ribose at PN.
http://neurotalk.psychcentral.com/post708792-40.html

Increasing energy production of your mitochondria, may give your muscles a needed boost. And help your sleeping.