Hi everyone. I am currently training for a half marathon May 18. I ran a half marathon last October. It was my first one. Did about 4 months of training working up 60 miles per week. Did rowing in high school so cardio base was decent. Not the most structured probably 1-2 hard long runs per week in training + rest + long runs. 1.25:44 was time 6:33 pace. Then did an ultra trail run November 19 was doing 70-80 per week in short time before ultra lead up. Took a month off after that tapering to 25 a week. Started running again 6 weeks ago. Starting at 35 miles per week. Now at 60 again. Have a very demanding job. Training plan now is 4 steady state runs plus 1 day rest plus 1 interval day such as a 5-4-3-2 workout plus 1 long hard run. Last week ran tempo 9 mile at 6:23 for context at where fitness is. Goal is to run a NYCC qualifying time at this race which is sub 6:10. Am willing to put in 70-80 miles per week as this is what I worked up to last cycle and am at 60 already. My question is how should I approach training some people say do one long half or marathon training block. Others say do a 5k or 10k speed block then a training block for half marathon. Want to be at 1:21 by May. Please let me know what you would recommend. Thanks everyone!