If this is any consolation, I have never never never been able to break Kelsey from 30 minutes naps. But just this past week, she magically on her own has begun taking at least one 1.5 hour nap. The other 2 naps may only still be 30 minutes, but sometimes an hour. I'm grateful for sure. I had stopped trying to extend her naps. She managed to move from 20 to 30 minutes around 3 months. She moved into 4 hour feeds on her own, even though she ends up with EASAE, she can make it hunger wise till 4 hours. Maybe your lo could do EASASE? I don't know if this is any reassurance to you or not, but I held out because I had read many times that her naps could lengthen on her own around 6 months. I think it's because she's much more active, and, therefore, more tired.