You can do what your suggesting, BUT it takes so experimentation, and replication. If this beverage is something you like, and are likley to repeat do the following...
Put some in 3 bottles, and record the dates, and hydrometer readings, and put away to check later in and explosive safe place.
Keep checking the main batch, and bottle as normal when you get to terminal gravity. When you get to terminal gravity open your first stored bottle.
If it worked. Repeat, as a whole batch. The rest will be ok you know because you did it the normal way.
If it DIDNT work... (undercarbed) try again at a slightly higher gravity (overcarbed) try again at a slightly lower gravity. BOTH as 3 bottle experiments.
And...AND...Now you have 2 bottles left to compare to each other...