B12 - top of range, even 900-1000 for us Hypos. I wouldn't stop supplementing, I would continue with 1000mcg sublingual methylcobalamin, along with the B Complex to keep all B vits balanced.
Vit D at 62 hasn't reached the replete range of 75-200. Recommended level is 100-150nmol/L according to the Vit D Council. You should continue supplementing D3 and when you've reached the recommended level reduce to a maintenance dose. Remember you need D3's important cofactors, particularly K2-MK7 and magnesium vitamindcouncil.org/about-v...
Ferritin is recommended to be half way through it's range. Are you supplementing?
Medichecks Thyroid plus ultra vitamin or Blue Horizon Thyroid plus eleven are the most popular choice. DIY finger prick test or option to pay extra for private blood draw. Both companies often have money off offers.
All thyroid tests should be done as early as possible in morning and fasting and don't take Levo in the 24 hours prior to test, delay and take straight after. This gives highest TSH, lowest FT4 and most consistent results
Email Thyroid UK for list of recommended thyroid specialists
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