I break all of my young horses the same way...allowing him/her to 'wear' the bit in the mouth for a couple of hours each day. The only difference is I use a breakaway halter (not bridle) and attach the bit via baling twine (double sided snaps work well too). Safety is my first rule of thumb. I normally use a snaffle bit that has a thicker mouth piece as they are more gentler to the bars of the mouth. Hope this helps you :)
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