My boys were born at 39 weeks, so not early. A day or so after coming home from hospital they fed every 2 hours, lucky I was able to feed them both and change nappies within an hour. I was topping them up with a bottle at every feed but that was too much work so I after about a week I only did it for one feed. I found I didn't get them to feed 3 hours apart till they were about 12 weeks old. So if you are feeding 3 hours apart now that sounds good to me.

I breastfeed them till they were 16 months old