My personal guess would be:
1. Since there are in-person/video ceremonies scheduled until mid-May, they might prioritize the ones that were cancelled afterward, and that puts us to end of May/June, OR
2. They might not prioritize and those people will go back to the end of the waiting line, meaning 2-3 months or more of waiting
3. "Queeze" in the cancelled people in the existing/scheduled ones for the first weeks of May
4. Add new/extra ceremonies to make up for the cancelled ones - highly improbable.
Who wants to place their bets?