I am asking for a 71 year old lady. She was diagnosed with mild thyroid 3 year back & given 12.5 mg thyronorm. She has taken medicine sometimes only & not regular. She got herself checked now her tsh is 12, t3 t4 is under normal range. My question is she is quite old & not used to much medicine etc. What is the advised dose as of now which she can take safely pls recommend.