@George *********
you don't have to do ANY 90 day report because your 90 day reporting stops counting down when you exit the country and when you come back you NEXT 90 day report is due 89 days from the date you stamp in π
YOU DO have to get back in time to apply for your next yearly extension (which has nothing to do with the 90 day reporting) and at most offices you can do that when you have 30 days or less left on your current stamp (so any time after May 23 or so)