Yeah definitely make sure you recover from the half. I don't know how quickly that will take you but I wouldn't do any very hard workouts for several days at least. Then in general, just maintain a decent level of marathon pace miles while reducing the overall volume slightly at first and then more sharply as you get closer to the race. I'm sure you know you can't really get much more fit the next few weeks, and that's not really the purpose. Maybe something like the following:
Week of 3/30 - 4/5: 65 - 80 miles. 15 -18 mile long run. Focus on recovering from the half (run as slowly as you need to) while still getting close to the mileage you were doing before. Maybe do one aerobic threshold type workout later in the week, but nothing crazy.
Week of 4/6 - 4/12: 55 - 65 miles. 10 - 14 mile weekend long run. Take a day off and meaningfully reduce the length of easy runs. I like to do my last hard marathon workout on tuesday of this week. Maybe something like 10-12 mi tempo or 2 x 6mi at (MP, MP-5). But leave enough in the tank to do another shorter session on thursday.
Week of 4/13 - 4/19: 20 - 35 miles. Just make sure you are healthy. Keep the volume low. Maintain some intensity, maybe a short Tuesday tempo and another even shorter session on thursday. Nothing should be hard here.
One question I have is why are you doing your recovery miles at 7:25? I know everyone is different, but my marathon pace is significantly faster than yours and I'll go 8:00 or slower on some runs if I need to. You cannot really run recovery runs too slow. I would emphasize you keep these runs really easy after the half so that you recover faster and can get in a few quality sessions prior to Boston. Good luck.