M.C.
My oldest took an hour too but as she aged it got better. People talk about letting your child stop a nursing session when they want to and I've heard you should break their suction. It sounds like you're at the point where you should consider breaking her suction after 15 minutes on each side. I think the child will learn the timing of things once you help establish it. Comfort nursing is something I allowed somewhat when my oldest was youngest and I allow it a little bit for my now 11 month old. She nursing in minutes but at night she'll go for 10-15 minutes. I think 15 minutes on each side is sufficient enough where you won't be starving your child if you stop her at a certain point. Hope this helps.