Sophia Watched your blues vids, but this one, oh man, just had to laugh. Our cats hate to hear the piano, well, music in general. I wish our cats got involved like yours do.
If I may offer a suggestion.... or two... once you get that left hand thing down, whether it's just moving the thumb, or doing the walking thing, you won't have to think about it. So, try just playing those left hand licks for a bit.
For a specific piece, like F and J, work on just the right hand melody part. Do these separately until you are bored with them. Then put them together.
Also, there are a few left hand vamps that are pretty standard and will work with any form, 12 or 16 bars. I'm sure your book has them all in one place or another, so you can mix them up if the urge hits.
You sound like you have a feel for it. Well done!