The patient prays standing as much as he can, and pray lying down on him
The answer is: خطأ. The patient prays standing as much as he can.
The patient must perform the obligatory prayer, even if he is flexed, or leaning on a wall or a stick that needs support.
If he is unable to stand, he prays sitting.
If he is unable to sit, he may pray on his side.
It is also permissible for the patient to pray lying down with the ability to stand for treatment, according to the reliable doctor.
If the patient is able to stand and sit without bowing and prostrating, he should shake his head while bowing.
And if he remembers it before standing upright, then he has to go back to the tashahhud, and if he remembers it after standing up, then he should say the salutations.
It is important to note that prayer is one of the Five Pillars of Islam, which is considered a bond that connects man to God.