Missing fasts

Asalaamualaykum Sheikh, i have a serious question, i have always fasted every year although i become very moody and not very functional during Ramadan i do attend taraweeh etc. i in most of the year have experienced on and off mood/mental changes which i have recently been diagnosed with Bipolar by a Muslim Psychiatrist. i have been to him before because he is quite honest in his profession and if you are a muslim aswell he always puts religion first in his findings. i decided to see this doctor now and get a diagnosis because i do love fasting but even though my mind is busy or stagnant it always has a million different things running through it, and i got to day 3 of this years fasting and had to break it. i felt bad, but with my illness i am finding it harder to read 5 times salaah and quraan which i did daily. so i am on a catchup of the salaah i missed, and i know it sounds bad but i had to not fast this year because of fear of becoming more “ill” and i fear with medication to treat this illness for the remainder of my life i wont be able to fast. Is this permissible if i am medically ill? and if so how much do i need to pay and to where? i am a Hanafi in Johannesburg. Shukrin