I had considered using the maximum allowable loss at yr end and adjusting that loss down by the multiplying factor for each period so that the annual loss did not exceed the cap.
The link above has an alternative strategy ……….use the multiplying factors given but cap the shorter period result at the annual max. This would result in even lower early period estimated taxes.
Since IRS may not be giving explicit instructions (?) , perhaps like in 8960, any “reasonable” method will work…….at least for one yr.