Yosay you have said a number of times you wish to get TSH to an optimal level. What do you call an optimal level? While you are taking NDT the TSH is a useless reading anyway. You do not tell us whether your thyroid is still working.
It is extremely important that you begin taking your medication again immediately. As others have said this is a life threatening condition and you will not get rid of the fluid without the medication. I am speaking from long standing personal experience here, and I have to tell you there is no quick fix for this illness. I have had it for 25+ years now and have still not lost all the weight. You may have lost a little recently but believe me it will get worse, not better, until you have the right meds.
You should get T4, free T4, T3 and free T3, plus Iron, folate, ferritin, D3, B12 tested and post the results, along with the ranges on a new question and people on here will tell you if you are anywhere near optimal.
Since you are not taking your meds I doubt your T3,T4,FT3 FT4 are.
You say your gp is no help, when you have read a few more on here you will see that gp's and most endocrinologists have no idea about hypo or myxoedema.
btw Have you seen an endocrinologist?