HI friend,
I have seen ur details u have mentioned about ur dads condition.
a}Encourage him rolling to left and right side with claspped hands in the bed. with the momentum he can be made to turn to right side from lying straight position.
b}Now slowly he has to put his both legs down the bed slowly with the help of his right leg curling over his left leg;
c)Now he has to press his right forearm down the bed slowly putting weight, then slowly change weight to elbow from forearm then to wrist finally with locking the elbow straight.now he ll be to nearly sittting position.
d} The same thing to be done in reverse to make him lying straight from sitting .


this is a way of training him transfer to sitting from lying and reverse by using his right side limb power{normal)


ALL THE BEST