Nap SOS...2 Naps a day timing ideas?!

This is not my first post about the 3-2 nap transition and clearly it's throwing us all for a major loop.... my 8 MO went from taking 3 solid hr naps to waking after 20-30 min. It seemed she was ready for o to two naps....but I can't nail down good times for them...it seems she gets overtired or some other nonsense bc it seems now not only are naps going to hell but they are taking bedtime along with them! I need HELP please! She usually is up Btwn 6-7. First nap around 10- goes well. It's the second nap I can't nail down. It's either too early and she's not tired yet or too late....bedtime is 7:30. Suggestions for nap #2 are greatly appreciated!!