I think more than the time between receipt and submission it’s that they’ll get to your application later that’ll hurt chances. Your best bet now, imo, is to finish them up as soon as you can. Since a verified primary was sent to schools you’ll be considered a reapplicant regardless of whether you finish the secondaries (if you have to reapply)
To give you a reference point, the secondaries I competed in mid- late September last year were reviewed around December to January. If you’re a strong fit, you may get an interview, especially since applications are not reviewed in chronological order.
I didn’t receive interviews but others with strong stats who submitted around the same time did.
Try to enjoy life and don’t stress out too much. If you do have to reapply, focus primarily on getting complete applications in early.
You’ll be alright in the long run
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