“If no one has been nominated to the position, an acting officer may serve in the position for no longer than 210 days beginning on the date of the vacancy. However, for any vacant positions that exist during the 60-day period beginning on a transitional Presidential inauguration day, an acting officer may serve in the position for no longer than 300 days beginning on the inauguration day or the date of the vacancy,” https://floridapolitics.com/archives/708364-donald-trump-floats-workaround-if-senate-wont-confirm-ag-pick-matt-gaetz/