Speaking for myself, in my experienced when estrogen was too high for me, I also felt like I needed to take a deep breath far too often and was estrogen related. Things I associate with high estrogen, chest tightness, chest soreness and having to breathing deeply.
Low SHBG men can have normal estrogen (20 pg/mL) levels and free estrogen can be much higher since low SHBG men tend to have an overabundance of free hormones. My point is an estrogen of 30 pg/mL while not high for a midrange SHBG man, can be high for a low SHBG man since more hormones are free and unbound.
Free estrogen must be sky high in the same way free testosterone is very high. You shouldn't be targeting high normal testosterone testosterone. High CBC results are also indicating levels are too high.
A dosage reduction is definitely in order, Dr. Saya has you covered.