Well, there are five teams who have scheduled launches. A Japanese team and an Indian team are riding up on the same Indian rocket. A team from the US is working with Rocket Lab USA. An Israeli team is working with SpaceX and an international team is working with Interorbital Systems.
So, if SpaceX has to delay launching the Israeli's for 6 months, all the other teams have to call their launch providers and say, "Hey, can you hold off on our payload for six months?"
At this point, I'd extend it only if it looks like no one will make the deadline.