well, to take the amount of T3 that's really gonna pull fat off you you will need to be extremely careful about not losing muscle on it...
to really take advantage of T3, i'd suggest pushing the dose up to around 75-100 mcg for 6 weeks or so.
100 mcg of t3 for 10 days increases beta-2 receptors by 60%
and 75 mcg of t3 can pull 10 lbs off you in 6 weeks
however, t3 increases estrogen aromatization, so you need to run an AI with your test.
i think your taper up is way too conservative. 12.5 mcg is prolly not gonna help you much, and is just gonna cause a negative feedback mechanism.
personally, i'd go 25 for a day, 50, 75 and then 100 for 10 days (to increase the beta-2 receptors so the clen is more effective). then i'd bring it down to 75 for another 4-5 weeks, and then i'd taper off. i would taper off slower, maybe 2-3 days per drop. when you're doing this, i'd make sure to have a diet high in iodine, selenium and l-tyrosine...
now if these doses are too high and you're dropping too much strength and muscle, then i'd back off, but i guess for someone wanting to retain all strength and muscle, then T3 might not be the best choice... i guess it depends how much weight you've gotta lose....