If the doctor ordered you not to stand or walk, pray sitting.

My question is tht i am pregnant and there are some complications with me so the doc asked me to rest and not exert nd dont climb stairs etc. So b4 i used to pray fard salah by standing but since the doc said me so i am sitting and reading all of my prayers . So is it ok to sit and read or it it compulsory to stand during fard salah.