In addition to the other suggestions, I'd try a couple of other things as well. First, try changing your vantage point. Attacking from a different angle can minimize or eliminate your reflections. You might also try to change your lighting angles if at all possible. Lastly, you might try an old Hollywood trick, a light coating of aerosol hairspray or temporary dulling spray. This can reduce the reflectivity of your bottles by diffusing the light reflected by them.