If you read a previous post that is exactly what I am doing. I made the first reservation in January (for this week actually). Once it looked like our May dates were not happening, I moved it to July, but have also cancelled the July trip since an opening date hasn't been announced. I have no plans to rebook until a date is announced.
That doesn't change the fact that Disney taking reservations without truly planning to open is completely wrong. Some people have to take off weeks and/or months in advance and cancelling their reservations a few weeks/days before they are supposed to arrive is horrible and if I had never been to Disney before and this happened to me, I would truly think twice about rebooking.
If it's July 1st or 2021 Disney should stop taking reservations until they actually have a plan to reopen.