I started with Egoscue "Pain Free at the PC" and found it useful. I don't recall any downward facing dog or planks in that one. And you can always skip things that don't work for you.

I still do the "air bench" aka "wall sits".

Another one was laying on your back with your legs propped on a block and your arms out. That was good for getting my head back over my shoulders and stretching my chest which was so tight that just laying like that, I could feel a pull in it.

Another good one was the one where you bring your elbows together in front of your face. I couldn't touch them at first and over time I my upper back opened up.

So I still have a positive perspective of it. If you have a clinic nearby, it could be very informative to have a postural specialist analyze you and prescribe exercises. If you have limitations, just share them and ask if there are modifications or alternatives.

Since we're on this subject, I have to give another call out to the book "3 Minutes..." by Weisberg and the video "Aligned and Well: From the Shoulders Up" by Katie Bowman. I reviewed the latter on Amazon as it did not have enough reviews. I use a different handle, but you'll have no trouble guessing which one is mine.

Good luck, everybody.