I have a couple questions, if I may. Have you always just used the AKC type reward based training methods, or have you incorporated some training with ecollar or prong collar?
This could turn into a long discussion, but first let me say you are doing great for Sashas age! Asha (I just realized that's Sasha without the "S"!) is going on 3 now! In short, I learned the hard way that
stopping behavior with treat rewards didn't work for my dog - leash-pulling & barking at strangers to be specific. In fact, they backfired and we had lots of un-learning to deal with. So those "Do Not" things had to be reinforced with correction that meant something to her (prong/e-collar). ALL my training to
do something (sit, down, come etc.) is reward based with marker (clicker or "yes") and food or toy. I didn't move into toy rewards until she was about 1 1/2 because she would spin out of control at the ball or tug and not listen. It took maturity on her part & patience on mine to move up to toy rewards. Also I used half her meals in training because I used tons of marker "loading". Repetitions when she was correct, like 15 or 20 in a row. She'd have a very unbalanced diet and I'd go broke if I had to use so many treats!!! I'm lucky though to have a very food motivated dog - she'll work for kibble, even if she's had breakfast. We had lots of setbacks due to Ashas belligerence and independence and was a very difficult puppy at times, so if anything, it sounds like you might be ahead of where I was at 6 months. I was also interspersing nose work with all the obedience stuff - she is always thrilled to do nose work, and very good at it. It works as a mental stimulation and the fact that I never tell her what to do or how to do it, regarding finding hides. For her personality this was huge. She hates being told what to do, she loves being boss, so this sport gives her the freedom to do that and get rewarded for it. Nice break for her to do this between everything else.
The order of training: Teach the "thing". Add duration, distance, distractions, but each of those one at a time and in very small doses. So "Stay" is understood, then add duration ( a bit longer, adding seconds, not minutes!), Distance (go further away, then around a corner in your home - again for seconds, not minutes!), Distractions (Stay while food is dropped several feet away, if she stays pick it up and give it to her at her stay position). But never add all this stuff at once - it takes months turning into years to get it all. Tiny steps will get you there.
Here's a link to AKC abbreviations:
All AKC Titles Sorted Alphabetically – American Kennel Club
RH & IGP are not listed, even though I noticed the old Schutzhund titles are, including the BH I have. I thought no bite sports were listed by AKC, but not sure how that works. BH (I have listed on Ashas name on my "signature" here) is a prerequisite of all IGP sports - it's basically obedience on steroids and a temperament test involving traffic, people, bikes, joggers, being left tied etc.
Most of all, reward with fun! After the last lesson of whatever you are working on, end on a good note, throw a party! Whatever is Sashas favorite thing - jumping up and down, running after a ball, tugging a rope - pull that out and do that for a few minutes with her.
Set a few goals - even if it's not trialing - and work on that. Take her everywhere you can to expose her to public situations.
Hahaha, there's my short version.