...Your little brother... This is something I didn't actually address directly. Hm....

Something to consider, as it follows the same formula of thought -
First, there is the fact that your brother is a projection of part of yourself in the dream (just as your mother is). So we ask "What in your brother do you see in yourself?" Same as with your mother, identify both negative and positive. Here, though, put an emphasis on looking for traits or needs that you're neglecting. (This accounts for the "Why don't you do something for your little brother" part.

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I know this is redundant to the first post. Understand - the methodology I use emphasize self exploration first. So everything can become a point of depth. The purpose is to identify those different parts of yourself being projected, and embracing them as part of the whole (even the negative parts...especially the negative parts).