Time gap between half Marathon and Marathon.

I am running like 20-25 or even 30 miles in a week for last 2 months. However, I have been running smaller distances (up to 10 miles in one stretch) for the past 6 monthsor so. As I mentioned, I have ran half-marathon once beforelast year and finished the race in 2 hours 15 minutes. I amcertain to improve my timing in thisupcoming half-marathon on Feb 9th.

I was seeking advicefrom the forum, if running 30+ miles in a week startingfrom now will make my job easier in marathon scheduled in March or not?

Thanks for the response

Sanjeev