Yep, reminds me of my trips MAN-DOH-MNL with Qatar.
2 glasses of champagne before push-back, a glass of wine when airborne, then another with the meal, then constant replenishment.
I say MAN-DOH-MNL, but for some reason I normally sleep on the DOH-MNL section, not sure why???????
As stated earlier, it is each to their own, If i drink alcohol I tend to sleep, so each top up last at least an hour.
Just take your time, chat to the flight crew and the assessment they make will normally be in your favour.