Am I making progress? Should I toil in 2.8 a bit longer or move on?

It's been about 3 weeks since I started with S&T and I "think" I've made progress but need some outside opinions (I'll include a few screenshots in the post). I've watched - and re-watched - the chapter videos and clips of my swing so many times that I'm getting a bit overwhelmed. I really need to find a range with grass as all my practice thus far has been hitting from mats. I'm also reading the S&T book now too.

I did my first V1 analysis with @Tom Saguto on 6/15 and he made several helpful suggestions:

1. Setup related changes: with the exception of greater hip bend toward the ball (could likely use a bit more), I "think" I've largely incorporated Tom's suggestions and am at least moving in the right direction. I could perhaps get my elbows closer together but anything more than what I'm currently doing is uncomfortable and creates a lot of tension;

2. Left arm more connected to chest: again, I think I'm doing this but need a 2nd opinion. This screenshot was taken just before I start to lift my arms which I continue to do no matter how many times I tell myself I won't. The proof is in the video and it always disappoints.

3. Setup / Stay against the wall: I think I'm mostly doing this. The first screenshot I posted looks like I'm heavily leading with my left shoulder but I think that might be partially due to camera POV. I do seem to keep my weight moving toward the wall throughout the swing as shown in this shot.

4. LIFTING THE ARMS!!!: this is what's preventing me from venturing further. I can see that's it's too high and causing an overly steep downswing.

I worry that that lift is caused by something which I think I'm doing right, but am not. Should I be focusing on something else and it will fall into place? Do I just need more time with the 90% drill? I'm open to any and all suggestions. I'm adding @GolfLivesMatter as an earlier comment from him encouraged me to post about this.

Thanks for reading!

James