In 25:35-36 the Torah says, "וכי ימוך אחיך ...והחזקת בו.. וחי אחיך עמך" - when your brother shall become poor.. and you should support him.. that your brother should live with you. The passuk goes on to talk about not charging interest, etc.
It is not enough to give a little tzedakka. You have to support your fellow Jew who became poor. "Your brother should live with you." You have to support him enough that he can live with you. On equal footing.
Don't make him sell his house and move to a lower class neighborhood. Help him get by and back on his own feet while continuing to be part of the community with respect.
The gemara says that one must support a fellow jew with tzedakka to live at the level he is accustomed to.
Your brother shall live with you. Don't just support him to help him live. Supprot him at the level that he can continue living with you. On equal footing.