Rationing practice tests

I am taking the LSAT in June, but may retake it in August, depending on how I do.

I have roughly 10 fresh tests left in the PT140-120 range. After that, I would have to take even older tests for them to be fresh.

Any suggestions for rationing tests? Really haven't thought about it before now (though I definitely should have) ....

I grind a lot of sections, and I think that has reduced my pool a decent amount.