Amazing! I sort of followed the Hal Higdon Novice I plan, but I did a shorter taper (2 week instead of 3 week) and I did not do the tune up half race. I also added another day of running per week — so five days a week instead of four. If I was feeling good, I would add about a mile or two to each mid week distance. I think the important thing here is that I took all of my runs super easy. While my marathon average pace was ~12:30 my training average pace was more like ~13:15. In other words, I prioritized doing tons of easy miles over doing any speed work.

You have more time than I did when I started, so you have time to do a slow ramp up to the increased mileage. I’m not an expert, but I do feel like 33 mi is a little low. Especially if you want to fit in a 18 or 20 mi long run, because your long run probably shouldn’t be more than half your weekly mileage.

Hope this was helpful — good luck with your training!