I might be wrong but I think if you look under IB and take the quick test it tells you the criteria for meetin gthe support component of ESA. That is how I found it anyway. Hope this helps.
I cannot imagine that somebody in your position with a high level of care needs will fail to end up in the support group when the migration happens, so please try not to worry.
Am sorry I'm not able to quote support group criteria, perhaps someone can, though it is difficult without a full knowledge of your limitations.
If for whatever reason you did not end up in the support group, you would have to seek professional help from a support agency and appeal.