So your most recent labs before the dose change was Free T4 at 1.57, which is 79% of its range, while Free T3 of 3.0 was at 43% of its range. This is kind of typical for a hypothyroid patient taking T4 med. The Free T3 lags Free T4 because of inadequate conversion of T4 to T3. The correct definition for hypothyroidism is "insufficient T3 effect in tissue throughout the body, due to inadequate supply of, or response to, thyroid hormone".