No, and it’s a good question to ask, you should definitely plan and ahead and think out how you reserve your stay.
For instance, my stay next month: I borrowed some points to originally book a stay for April at 11 months. Later I modified the reservation at 7 months and that reservation used fewer points. This left me with leftover points for this use year. I was able to bank those into next year, but if I had thought about it up front I would have booked 1 less day originally and borrowed fewer points than I needed when I was modifying at the 7 month point. Then I wouldn’t have banked points in next year’s use year. It’s not a big deal, but because of those banked points, next year I will have to do a split stay.
You can’t always avoid something like that anyway, but if you think ahead you can minimize it.