My baby is a little over 3 months (14 weeks), and on average each nursing session takes 40-50 minutes. 30 if I'm lucky. She's definitely a comfort nurser and I can tell it turns into that more towards the end. I would just take her off once I notice she is comfort sucking, but I can tell that she's still getting some milk and every now and then another small letdown. I'd say most of the milk is transferred by 15 minutes on each side, so she nutritionally probably doesn't NEED the last 10 minutes on each side.
However, the problem is... I'm VERY prone to clogged ducts. As in, I'm currently on day 4 of no plugged duct and I'm CELEBRATING. I've had almost 20 in the last 8 weeks, and there were a few weeks where it was almost every day a new plug showed up. I'm well aware of everything that causes them and how to prevent (doing all I can), and I know that not fully emptying the breast can cause them. This is why I'm so scared to pull her off once she is comfort nursing. How do I know when I'm fully emptied? As far as I can tell, you never really ARE fully drained. So why am I told to empty my breasts at each feeding to help prevent plugged ducts?
Also - how do I KNOW she is done? No matter what, she is upset when she comes off. I think it's mainly because of the comfort nursing, but I really feel as if she'd nurse and drink my milk forever if she could. I don't have time for that