There’s not really a definite answer, but in general I would say, don’t leave the saddle on longer than needed to get the job done. Left on too long the saddle and girth can cause rub marks and sores. Even in cool weather the horse is going to sweat under the saddle and girth just for lack of air movement.
There is no one answer but on average I would say 60 days. I have seen as little as one week, but usually the first 30 days to get the horse on board then add instructions the second 30 days.
In order to ride a Horse, all you need is a Saddle. Unfortunately, you cannot make a saddle, you have to find one. You can find them occasionally in chests around the world. Optionally, you can put Horse Armor on Horses (not Donkey’s or Mules).
Western riding is supposed to be relaxed and comfortable for both you and your horse.
Teaching the yearling to carry something on their back won’t hurt them at all. Get them use to carrying a saddle pad, but introduce it slowly as you don’t want to get them scared of it. Let them smell it before you ever put it on them.
Preparation. The most practical thing to do is to saddle your horse first and then put the bridle on. You avoid having to struggle with putting the headcollar back on over the bridle so that the horse can be tied up. To put the bridle on; you first hang the headpiece, together with the reins, over your left arm.
Tack up your Horse