There are many discussion threads about 2e accommodations. What they seem to have in common is that the most progress may be experienced by children whose parents work with the school to help set goals and establish IEPs/504s with specific accommodations and measurable progress toward those goals.

http://giftedissues.davidsongifted....Ctr_for_Learning_Disabil.html#Post179301

Wishing you all the best with helping your 2e child reach meaningful goals through specific accommodations.