i have a problem kneeling because of my knees, i can kneel if i lean back on the pew in church, but otherwise it’s to difficult,
and what i would say is, if it causes you pain, then don’t do it, because that’s your body trying to tell you that somethings wrong,
but what you can do is, offer up not being able to kneel, and that will be more pleasing to God, because while you want to do it for good reasons, it’s still a sacrifice to deny yourself that way, and it’s a good way to discipline yourself, because it’s doing what you should do rather than what you want to do.
and don’t worry if you can’t physically show reverence to Jesus and Mary by kneeling, because your desire to show it is just as pleasing to them.
ok, hope this helps, take care.