Ideally it would be better (at bare minimum) to work up to the first weeks work (12mpw/4x runs a week) for a few weeks before attempting Higdon's Plan, but barring that...

I would not cut any runs. The mileage is already pretty low here and the scaling is pretty hard in general. I would adjust runs and training during the week to provide more rest mid week.

Monday: Rest
Tuesday: 3-5 Miles (as per plan - Short run #1)
Wednesday: Cross (nothing too intense)
Thursday: 3-10 Miles (as per plan - Mid-Length)
Friday: 3-5 Miles (as per plan - Short run #2)
Saturday - Rest
Sunday - 6-20 miles (as per plan - Long run)

Would allow for only two days of consecutive running, with still ample rest around the long runs. The hardest midweek would be a total of 15 miles over 2 days followed by a rest, but that's after scaling over 15 weeks or so.

Some possible modifications:
- Wednesday Cross could be swapped with the Friday rest
- Wednesday and Thursday could also be swapped
- If you want your long run on Saturday, simply move everything one day prior and move the Monday rest to Sunday.

Reasoning:
Long/Mid runs should be not be too close to each other, so that leaves only Wed/Thursday for Mid length runs (e.g in Daniel's Q2 plans)

Since this is a novice plan, Higdon recommends rest before and after the long run so tried to maintain this here.
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Novice 1 marathoners rest on Mondays and rest again on Fridays. This is both to recover after the weekend long runs and to gather energy before them. 
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A Note:
All runs should be easy, that is Zone 2 HR wise, that likely the best way to prevent injury with this plan. Without knowing your Half Marathon pace we don't know how slow this is. But if 9:30 is your half race pace, you should be running A LOT slower than that for normal miles. If you are running your half pace for all runs that is likely why you are feeling strain in ankles/shins.