Completely honestly?
When a doe gives me that "I wanna breed" look, I just pop her in with whatever buck I had previously picked out for her. Usually the "plan" is just in my thoughts, I can't remember the last time I had a breeding plan on paper. If she accepts the buck, I write it on my calendar.
If she doesn't lift for him, she still gets a nestbox in 28 days cause I've seen seemingly unsuccessful breedings produce kits.
Consider what I'm breeding, and why though.
Harlis are bred for a marking pattern that can be notoriously random, with much less focus on type.
Producing meat for my family is actually my primary focus.
I don't need to produce kits intensively, as I have more than enough working does to keep my freezer full.
(It doesn't take very many.)
I still have a small rabbitry, and good memory for what rabbits I have, who they are out of, and related to.
A casual breeding rate based around what the rabbit is telling me is fine, I just keep an eye on them to prevent them from getting fat. (3-4 times a year is good.)
Random experimental breedings are a good for me, and it's no harm to try a doe with any suitable buck in the rabbitry just to "see what she throws." If she doesn't get bred to a buck I'd like to see kits with this time, she will next time.
And lastly, I live too far out from any shows to make a point of breeding for them, as I can't generally predict if I'll be able to attend that far in advance.
I save the old calendars to have a record of who was bred to whom and when.
If I lived where I could be sure to be able to attend shows, I think I would have a schedule to make sure I had juniors I could bring.
I think, if I had more rabbits, I'd want to keep track of their ages more carefully too.