Yes, if I get symptoms I can slow down the decrease - only this might just prolong the misery. We need to get my TSH unsuppressed so my thyroid can kick in and start making hormones again. Pootling around and taking ages above the level where my TSH gets unsuppressed could just leave me hypo for no reason. It might be better to get quite low relatively quickly and then pause at a low dose whilst my thyroid gets working again. Body builders routinely use T3 only to cut before shows and the usual body builder approach is either just to stop it dead(!!) or to cut to 12-15mcg and hold there for 2-3 weeks whilst the thyroid gets working again.
I had to get my rT3 tested privately, but if your T4 is below range I don't think you need to worry about that.
Yes, I am still doing the high protein diet and I'm maintaining now around 2100 cals. I'm being very careful as I come off the thyroid meds and tracking everything. I work from home and otherwise I can get a bit snacky around the fridge
Do you have symptoms associated with your high T3? Like a ravenous appetite and fast metabolism?? Are you losing weight or doing runny poops? Or is this just an anomaly on bloods?
My sleep is a constant work in progress. It's the whole reason I started thyroid meds in the first place. I had a very normal looking thyroid panel before starting meds - except low in range T3 and high rT3:
TSH 1.37 (0.270-4.2)
free T3 3.9 (3.1-6.

free T4 18.6 (12-22)
rT3 32 (8-31)
And we were looking for the cause of my night time symptoms, which were severe insomnia, heart beating hard and fast through the night, hypnic jerks any time I began to fall asleep, inability to get into deep sleep, inner tremors/shaking. Sometimes only 3 hours of light sleep a night. I couldn't function. So it was a bit of a trial to give me some thyroid meds due to that high rT3 and see if it did anything. It didn't do anything to these symptoms after all kinds of dosages (right through to T3 only up to 90mcg!), so it's time to come off now.
I haven't noticed any difference to my sleep on T3 but it is crap anyway because that was my original problem. It has improved a lot because I think I've been able to get my estrogen up a bit (now at 325pmol ish) but I want to try getting it even higher once I'm off the thyroid meds. Or maybe I will suddenly be able to use it better because my SHBG will drop...
With the scales, I seem to either want to weigh myself every day or never weigh myself at all (because I'm scared of what I will see, it's been so long

) so I think I can do a month without weighing. The other factor is I've put A LOT of muscle on doing strength workouts 5x/wk with heavy dumb bells and eating high protein - I didn't really have much fat anyway but I've lost a lot of what I had too - so if the scale does go up I feel I can reassure myself it's muscle anyway. My body feels totally different. If I fold my arms, I'm distracted by my biceps.

My glutes have become a shelf instead of a pancake

It's hard to imagine being lean and fit and muscular and also 'fat', so if I can focus on this ideal body type instead of an arbitrary number on some scales, I can free myself....
I did the first cut to T3 today, 5mcg reduced. On Weds I will halve the T4.....