They say it can take a good two weeks to adjust to the progressives and yes there were times I too thought I was stoned. I actually have trifocal lenses and it took me less then a week to adjust. You, like me, are at an advantage as you aren't going from traditional bifocals to the progressives.
Wear them constantly and you'll see how very quickly you get used to them.
I'm an artist and never have a problem anymore. I don't even think about it.