I have an impression like exercises *have* to be done in a smooth, controlled manner to be effective. If kids are jerky or can’t slow down, my understanding is it’s not going to do much for them.
So I hear about things that are for kids who can’t do some exercises because they can’t do them smooth and controlled (no matter with what modification or small amount of time).
So them what I have heard is they look for things the child can do or look for things that can be cooperative so that someone else is regulating the speed. With some someone else is coordinating the body movements also.
And then kind-of work up to being able to do the more advanced exercises, but maybe it takes years.
I don’t know anyone in person whose child has moved through so fast (as it comes across to me) but I have only ever known anyone in person doing it whose child was qualifying for OT at school, so it is kids who are delayed enough to qualify for school OT, which is hard to do.
I think that some kind of exercises are rhythmic on purpose, but others, it's more about the slow and controlled. But, that's kind of splitting hairs, and I don't mean to do that. It's just that we have done more than one kind of exercise for reflexes, and the rhythmic movement training ones were smaller movements that were meant to have a rocking motion most of the time. The other exercises we did were smooth and controlled (once they were understood by the child and the child was ready), but they were larger body movements that were not necessarily smooth in the same way as the RMT. Just throwing that out there because I think of those things as different. I think RMT breaks the movements down into smaller parts than the exercises we did in VT, but neither of my kids did the same exercises entirely either. They had different strengths and weaknesses.
On why PT and OT, when, and how long...
My kids had a very spiky profile of abilities--there were things they weren't "supposed" to be able to do unless they could do this other thing first, and that other skill was not in place--this happened a lot with them.
My younger son, who has more issues, seemed to have regressed in coordination over time. This is probably due to some additional factors besides retained reflexes though--he has a genetic abnormality. But, for instance, when he was a toddler, we thought he'd be super coordinated. From the time he could walk, I could roll a ball to him, and he could run up on alternate feet and know just where to be to kick it. He didn't have to adjust--he would end up in just the right spot over and over without any practice at this skill. But then, at 10, watching him button a shirt is painful. It's just so wild and misaligned! He was all but riding a bike and then lost the ability. Then he'd learn, only to lose it again (he can now).
For my older son, we opted for OT for sensory issues, and coordination got better.
Both kids needed VT before OT would amount to much, and we figured that out by pure luck--our regular eye doc is a COVD. At first, she thought they were fine, but it became clear that when they were tired, all bets were off--their eyes and brains were reinterpreting visual data incorrectly.
Knowing what I know now, I would very much have pursued PT right after VT, and then worked on OT, or I would've gone to a combined PT/OT practice right after VT. But VT improved things so enormously (due to the reflex work) that we got a lot of mileage out of it before more symptoms caught up to us coordination-wise.