No, that's not what he said.
He said do the full length tests first. Then do the subject specific. The subject specific will have questions on there that will appear in the full length exams. So if you do the subject specific ones first, you will already know the answers to some of the questions on the full length test, giving you an unfair advantage and cheating yourself of the purpose of the program.
Go through Destroyer before BC.
Chads+feralis->destroyer->bootcamp->ADA practice exams.