Sadie had a four-week checkup to see how her thyroid levels were doing. I'm pleased to say that her numbers are much improved. She even gained 4 ounces! We can reduce the medication a bit. She'll get rechecked in three months.
An interesting note: I asked the vet to check her ears, because she had been scratching them a lot. She tends to get semi-regular yeast infections in her ears, so I'd started some ointment she'd been given before. Turns out, the scratching is a side effect of the medication. I'm hoping the reduced dosage, in addition to time, will help with that.
Here's a selfie I took of her on Friday night. Despite her looking grumpy, she was quite happy at the time.