I was targeting a sub-5 hour pace at Marathon of the Palm beaches on 12/2 when a death in the family caused me to run only about 5 or 6 three to four mile runs over the two weeks ending Tuesday. I'd appreciate any thoughts on how (and if) to manage my remaining training to maximize my change of meeting my goal.

Background on 20+ mile long runs:
9/9 - 21 miles, time unknown
9/30 - 20 mile race, about 3:40
10/21 - 23 miles, about 4:20, struggled last few miles

I did 6 yesterday and 8 today, planning 4 Saturday and maybe 16 or 20 Sunday. Is there some # that if I can't reach I should write off Palm Beach now?

Long runs for remaining 2 weeks pre-marathon might be 15 and 10. Also my other runs would normally drop to 4-6-4 beginning next week, but wondering if I should hold 4-8-4 for at least one more week given what I've missed.

Hard to understand how to taper and build back up at the same time! Any and all thoughts appreciated! Thanks in advance.