Now. A change that may affect your petition is addressed promptly, not parked until a scheduled update. Asking questions does not pause any deadline that is already running, and an incomplete response to a request for evidence can lead to refusal, so start assembling the amended documents immediately.
Deadlines that keep running while the project reorganises
There is no universal rule returning capital after two years, and no uniform sustainment period you can read off a calendar; the governing terms and current requirements decide. Later in the process, the I-829 is filed during the ninety-day window immediately before the second anniversary of conditional residence. Where you are eligible, concurrent adjustment may be available, so sequence is not fixed for everyone.
The first stage is the investor petition, whose processing time USCIS publishes and revises. A revised valuation may support a commercial update, but it cannot remove conditions. Assembling this file annually rather than in the last month before the window is the difference between a routine petition and a scramble. Do not let a project's subscription deadline push the family to file before the parents' records are complete.