Initially my hyper results came down to hypo in about a month, then only small changes for the next 5 month. during that time I felt dire, but at the time I wasn't educated enough to know any different. As the swing from hyper to hypo was so quick, I had no idea that I was already over medicated, so still felt very ill. I took over my treatment using medichecks thyroid blood checks, and with any eye on clinical symptoms - which improved in literally days. during this time I also tested vitamins, which I fond to be low/deficient. I bought the best I could find on amazon and dived right in with very large doses for two weeks ( I also discovered that I had the homozygous MTFR gene and so had probably been deficient in B's all my life) so vits all came up to *optimum* levels ( not doctor normal levels), and fT's/TSH all came back to normal levels very quickly.
I am one of the luck ones as my Graves has gone into remission for now at least. and as I'm treating myself, I don't need to stay on a low dose of Carbimazole just because that's the way endos do it. I just take what I need which is nothing at all atm.
Antibodies are also coming down, particularly thyrotropin receptor stimulating antibodies, which is the main concern with graves.
If you have any more questions I'll do my best to answer.
Just reread your post and noticed a missed answering some points.
All bloods taken early morning, fasting.
Waiting till next Friday would quite likely give a slightly more accurate result, but as you say you already feel poorly I would guess you are already hypo, so getting the tests soon means you can take any necessary action sooner, and so potentially reducing you time feeling ill.
I changed my dose of Carbimazole every 2 weeks immediately after my test results showed that I was hypo (as my symptoms indicated)