When do you breed? 

I have only come back with 2 pairs. What's your strategy? I always used to do

storem1xstoref1 = baby1

storem2xstoref2 = baby2

If I got babym1 and babyf1 id put them together and get a new storexstore pair to breed them with. If I got babym1 babym2 (or both f) i'd buy two stores.

I also breed just before they retire like the day before.

Is there a better way? Is that an ok way? Let me know!

There's so many different ways of doing this.. :D

When it comes to store or bred pairs, I try to get matching pairs from breeding and if I have a surplus of HPB I may buy a gender swap. But often I'll just buy a store mate for any odd foal to get a pair.

As far as I've seen, most people tend to breed their animals on the last Sunday (so for example the Sunday the horse turns 20, for one more week of training before they retire the next Sunday). I tend to do this as well, unless I forget and accidentally get a Monday or Tuesday foal instead. :D This is the easiest way to remember to breed on the correct day if you get Store mates as well. 

Thats how I've been doing it! I buy a store mate :)