Our paper describing the progress of hypothyroidism and thyroid failure and its effects on FT4, FT3 and TSH, up to the moment of total thyroid failure has been published in the following:
Triiodothyronine Secretion in Early Thyroid Failure: The Adaptive Response of Central Feedforward Control
December 2019 European Journal of Clinical Investigation
DOI: 10.1111/eci.13192
Project: Assessment of T4/T3 control of TSH and percentage of total corporeal T3 contributed directly by the thyroid
Lab: Thyroid Lab Rudolf Hoermann
Rudolf Hoermann, Mark Pekker, John Edward M Midgley, Rolf Larissch,Johannes W. Dietrich
The paper may under a paywall.