OMG!
I just watched a video of myself delivering an ABA session to my ds 2 years ago, teaching him language order of a 3 word sentence and pronouns. I was literally shouting at myself at all the mistakes.
BUT - I could STILL see the learning happening right before my eyes. Just a couple of minutes slower than it could have been due to my silly mistakes.
Parents can do this stuff and make a difference. I was new to it all and the learning that occured in the 5 mins of video was more than he learned in 2 terms of SALT in school.