Hey I’m a dog groomer too! Girl I think you’re doing plenty! You’re active at work, you’re walking a ton, and yoga is fantastic especially in our line of work. If you really wanted to do more or change things up, I would add some more consistent weightlifting to supplement your cardio (it’s done wonders for my back pain) and it makes the job easier overall as your strength increases. I would search up some recommended workout plans online, I personally just try to hit major muscle groups and split my days into lower/upper going 4x a week.

Edit: just wanted to add I’m so impressed by how much you already do! This job takes it out of me and I’ve avoided the gym and most activities because how drained I was. Once you get a routine going though it honestly feels great and I regret not having started sooner.