Final phase of the meditation is to take a sip from a flask.

Yes, but he does not give you it. Maybe you could have your own bottle. You are a handyman after all.

Don't know if you noticed, but there was a bottle at the Outer Turn.

You should fill the bottle.

You can fill the bottle from Doc's flask. If you could get him to a certain position and fill the bottle sneakily.

Talk to Doc and ask about meditation. When he is fixating with his leg behind his head just use the Empty Bottle to the Booze flask. Tada!

Drink it only as the last step in the crane!