EDITED RESPONSE: I just read in the code at https://en.wikipedia.org/wiki/Internal_Revenue_Code_section_1031#Time_limits that the time limit from start to finish for a 1031 is 180 days. I can't find it in the actual IRS code itself.
If this is rental property you are entering, you enter each property one at a time. You will not enter the 2nd property until you have completed *EVERYTHING* for the first property. You'll know when you finished with the first property when you get to a screen with an "Add Another Rental or Royalty" button on it.
