Hi, welcome to the ehealth forum and I am glad to help you.
You seem concerned by the fact that you don't feel hungry for the last 1 year or so but you drink lots of liquids.
The loss of appetite is an important symptom of some underlying chronic disease etc. and if the same is ruled out, you can consult your psychiatrist to rule out the possibility of eating disorder such as anorexia nervosa etc.
It is not possible to make a diagnosis online with the limited case history. You must consult your physician for the same.
Hope this helps. Take care.
Note: This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.