I guess if I may have to, my recommendation would be NOT to follow any set formula (I'm sure you knew this was coming...).
One of the things I've learnt over the years; you write down a seemingly perfect training schedule, each day's distance and effort and all those numbers are perfectly synchronized. Then reality hits and something may happen, you may get some nagging pain in your leg or something... Now you have a choice; you either stick with the plan because it looks so beautiful; or use what you've got between your ears and follow your own reactions.
One time, we took all athletes to Hokkaido, northern part of Japan, for a week-long training camp; we flew out there, sent all necessary equipment and all to the hotel, all the rooms booked... One of the athletes complained nagging pain in her groin. So what do you do? You've paid all the things, arranged everything, so you'd want to just go ahead and do the camp anyways... Wrong. If you have an injury, you have an injury. Basically, nothing you can do about it (well, you can, but you know what I mean?). You cannot, and should not, let the schedule dictate; you have to let the healing process to decide what and how you should do the training. She ended up walking a lot--3 times a day up to 2 hours. We did what we could do (yes, we DO have something we can do...).
My suggestion would be: go very SLOW. Remember, you can NEVER run too slowly. If anything, nice easy jog would increase the blood flow to the area and may do you good. But keep it very slow at first. Put extra jacket and pants on and start warming up by walking first. Start with half an hour jog and see how you feel. If the pain doesn't "worsen", then increase that to 45 minutes every other day (not the speed); then an hour. But forget the weekly mileage; be it 40 o5 50 or 70. If you start to target certain numbers like that, then you'll be in trouble. Go by how you feel; not by numbers.