Situation:

March 2024 vacation, 2 weeks. Japan. Booked Economy (not Basic) on united.com 2 tickets RT TYS>NRT.

Wife and I had the misfortune to get COVID this month She missed 8 days of work and her employer does combined sick/vacation time for PTO
and - yes - she will now not have enough PTO for us to go on vacation this spring. She's in the health care industry so of course the answer
when she asked HR what her options are was "Too bad for you".

My instinct is to change the vacation out several months to the fall, which I'm OK with. But - my business schedule can be unpredictable and
there is always the possibility whatever dates I pick months in advance won't work out. I'll know a couple months beforehand for sure -

If this happens - am I going to be able to make a date change yet again with United?