Toward the end of my studying I bounced around for that very reason, except for the last week when I did a bunch of very recent PTs. Although I tell my students now to use 1-30 for drills, 31-50 for practice sections, and 51+ for full length PTs.
Are you missing a specific game type or is it just the difficult level that you struggle with? If the latter, I would try to focus your fool proofing on some of the hardest games out there like game #3 from PT 88 and game #2 from PT 31.
I'm in the exact same scenario. 31 Years old, was looking to take the LSAT in October and Push for fall 21 admissions but I may eliminate some stress and take it at a later time
The billing cycle is every 31 days, so it doesn't matter what day of the month you sign up. If you start today, the month will be considered to have ended 31 days later.