If the metaphor holds, then yes.
I’d actually think of it even more simply.
We can think of a joke:
A young man sits in a bar on his birthday waiting to be served. He’s finally 18 and eager to have his first adult drink and to ‘do it right’. He plans to only drink from his favorite glass, a small shot glass that was passed down from his grandfather to his father to him.
First order: bottle of wine. Classy young dude.
The bartender checks the young man’s ID, looks at his special glass, and smiles in understanding. He fills up the glass and sets the bottle down, ready to say ‘Cheers’ and ‘Happy Birthday’.
The young man slams his hand down on the bar and says, ‘Don’t try to cheat me! I paid for a whole bottle and I want a whole bottle! Keep on pouring!’
Moral of the story:
Pour until your glass is full, and then stop f**king pouring and drink!
(‘Drinking’ in this case means using what you just poured. If you can’t drink what’s in your cup, then why do you want more?)