Pay the entire fee. Unfortunately, that's really the only thing he can do if its already in collections.
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He can contact the court and see if they'll give him some sort of payment plan. There are occasionally amnesty periods where the courts waive some of the late fees so people can get their licenses back.
Unfortunately, there's little you can do about the insurance company's decision to cancel his insurance if his license continues to be suspended. He would just have to obtain insurance again when he's licensed.
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Your boyfriend needs to man up and deal with this. Since he cannot afford to hire a locally experienced criminal defense attorney to assist, he should go to court and request his matter be added onto the court calendar to address the unpaid fees. Perhaps then the court will work with him which will in turn lift the hold on his license.
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