Usually you get more answers if you start a new post, rather than appending your question on to an old one.
If you don’t feel like either of the barns you’re currently riding at is a good fit, then absolutely keep looking. It’s your money and your hobby, so you should find a barn where you’re happy. I would probably be up front with new trainers that you’re trying lessons at a a few barns to find the right fit. Some might be upset about it, but that actually tells you a lot about the barn and the trainer.
However, the other thing to keep in mind is that the barn that is a good fit for you now, while you’re just getting back into it might not be the best fit for you down the road. Now, you might want a place with a lot of lesson horses and lesson options. In a year, when you are ready to look more seriously at leasing or competing, you might want a less busy barn that caters more to adult riders.