I recall posts like this in the weeks leading up to Israel playoff in March 2020. One of the learning points from the Covid experience is that football matches and tournaments at any level can, on a whim, be canned, postponed, abandoned, moved about or rescheduled in such a way that has no regard for player welfare.
The starting point here is to find out how Ukraine wish to proceed and act on those intentions. If that means inconveniencing a load of different nations then that's just how it will be.