I think you can postpone your delivery about a month. Complicated.
I just spoke to a Tesla Person (found a local store that listed some open hours and a phone number, some do not. I called number, asked an automated service for a call-back, took an hour). They said I could put my account on hold until my original estimated delivery date. The person agreed to put an "target delivery date" in the next month, but told me that sometime in the original estimated delivery month I would get a text message telling me I had to take my account off hold. So, from this I conclude that you can push back your delivery date up to a month beyond your estimated delivery date.
Now, the Tesla rep never explained any policy. Further, my "original delivery date" doesn't appear on my order confirmation.
CONCLUSION: CALL THEM. Ask them to explain policy, ask them to work with you to stretch delivery date as much as possible.
Opinions in Response to Posters above:
Thus far my favorite post here includes "Lower gas prices have helped ease demand". In CA the refineries ever and always find newer and more incomprehensible ways to crank up gas prices, including going offline at times of shortages to a__-___k us Californians. Gas is now above $7 in most cities in CA. And I seem to recall that USA has fought like a dozen wars over oil, and every few years like clockwork, oil producers collude to produce gigantic spikes in oil, and therefore gasoline prices, over the historical long term. And I think due to Ukraine war issues, everyone in Europe will want an EV as well ASAP. I think EV demand will remain robust for some time not just in CA, the USA's most populous state, but in many others, and in greater Europe. Just my opinion, but I think it's pretty justified.
(Many very nice looking EVs will come online in the next years, but consider the humongous failures of the ID4 (software) and the BZX4 and all its variants (literally wheels falling off). Not all that is promised will turn out well.)