I would do something like this:
HI day 1: acceleration, but gradually moving out in distance, e.g. 2x10, 2x20, 6x30 in week 1 and 2x15, 2x25, 5x35 in week 2, etc. Notice that the number of runs decreases as the distance increases to ensure the overall volume stays within reasonable limits (around 300m per session for blocks starts).
HI day 2: Speed, ie EFE, FEF, flying sprints with gradually increasing acceleration limits to build intensity over time. While intensity is low you can do about 7-8 of them (each one being 60m long) per session, but once you’re at maximum speed I’d only do 5-6 per session.
Every 4th week should be an unloading week with reduced volume and/or intensity.
I would try to plan things in such a way that you’ve had at least 3-4 weeks of having run at full speed (both from blocks and flying sprints) over 60m before your first race. I’d also plan an unloading week as the last week before the first race.