The neuropsych said he felt that any additional testing would be just as scattered.
I'm sure that it is much too soon, but did you get the scaled scores for each of the subtests within each index and not just the raw scores? I'm sure that a lot of us are more familiar with those scaled scores and I don't think that it is simple to convert from one to the other b/c you need a chart that includes the child's age band.
The fact that he mentions scatter, and those raw scores look scattered, makes me wonder if it is possible to ascertain what parts of the test were the most impacted and whether they are the same parts that he had difficulty with previously. I'm sorry that this was such a disappointment, but glad that you didn't have to pay a ton for the testing at least

.