Hi, I had the same issue the other day. I am not sure which PTs are worth skipping but this is what I decided to do. I am jumping straight to 55 (that would get me to PT 72 by the last week in Sept--I am doing 3 a week)

I am using PT 37-41 to stimulate for the 5th sections

The rest that I have (about 15 others..42 -54 & some older ones) I will use for time sections...and practice on specific problems.