Defintely, even OTP wheels shouldn't required truing straight away or even after a couple of months, if it does, then it's still perfectly normal to true it a bit.
My Tiagra/Open Sport wheelset (machine trued) were still perfectly trued since I got them back in July.
Just not to the point of almost redishing the wheel again to make up for the poor attempt.
Defintely, even OTP wheels shouldn't required truing straight away or even after a couple of months, if it does, then it's still perfectly normal to true it a bit.
My Tiagra/Open Sport wheelset (machine trued) were still perfectly trued since I got them back in July.
Just not to the point of almost redishing the wheel again to make up for the poor attempt.