Joy, TSH is low and FT4 almost in the upper quadrant of range but there's no need to reduce dose unless you feel overmedicated. TSH and FT4 don't tell how well you're converting T4 to T3 so it may be worth having a private FT3 test from Blue Horizon or Genova via thyroiduk.org.uk/tuk/testin...
There can be neurological symptoms with B12 <500 and PA Society recommend 1,000 is optimal, so supplement 1,000mcg methylcobalamin sublingual lozenges, spray or patches and take a B Complex vitamin to impove folate and keep the other B vits balanced.
Really need to see what is happening. I have a conversation issue which I wouldn't have know without having FT3 tested so go for a private test is you are able to and then post your results.
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