Does anyone notice free T3 more than tsh?

i just got my labs back again and i’m looking at this pattern where the tsh is totally fine but my free t3 has been dipping. it kinda matches the periods where i feel these massive energy crashes or when the metabolic stuff gets hard.

im mean, how much does a single bad reading of free t3 (like 60-70)? is that more clinically useful to track than seeing what my actual tsh reads at an appt?

doc always just focuses on the baseline range. has anyone else seen a huge correlation b/w trough free t3 and symptom flare?