Lab results after slowing adding more synthroid (follow up from January post)

[corgiluv22]

After having a nasty fight with my ENDO this January where I insisted that my FT4 and FT3 levels were in the gutter (even though my TSH was low) and feeling horrible. (See my previous post from January for more details)
I have been on a journey the past few months and don't feel like I have gotten very far with increased levels. I don't know if this is because they increase haven't been enough OR if there is something else going on. (I don't know much about RT3, but have seen others discuss it).
Please share your thoughts / advice if I should go back to Endo an ask for increase dosage.
I will include symptoms within the dates of the Lab ranges I post. VIT D, VIT b12, and ferritin are in optimal/normal ranges---VitD and B12 are actually high in ranges.

January--Feeling severe fatigue, inability to lose weight, severe exercise intolerance, swelling, mental recall and memory issues
Current dose 50 Mcg synthroid and 10 mcg Cytomel (split)
TSH 0.718
FT4 1.06 (0.89 to 1.76)
FT3 3.2  (2.3 to 4.2)

*bumped up to 75 mcg post Jan apt--but she  took 5mcg of cytomel off--she was afraid I'd be hyper

March labs --symptoms inability to lose weight, less fatigue but exercise intolerance
TSH 0.986
FT4 1.19
FT3 3.4

April--inability to lose weight, mild fatigue,
TSH 0.691
FT4 1.23
FT3 3.3
*post April apt bumped up to 88 mcg per day and 5 mcg cytomel

June Fatigue, inability to lose weight on low glycemic diet despite exercise etc....
TSH 0.321
FT4 1.28
FT3 3.1

So after all this, my FT3 levels have been taking a nosedive and the FT4 levels are crawling up and barely changing. Its been a struggle (actually a fight) to even get my Endo to increase the dose. Should I go up again to relieve symptoms? Or is this TSH too suppressed at 0.321?