Ultimately, as a member of a legislative body, if you don’t like the way the executive bodies charged with inplementing a law are doing so, your choices are:

(1) Work with other members of the legislative body to hold the executive accountable for failures, via hearings, sanctions (often, if at the same level, including removal), etc., or

(2) Work with the same body to file a lawsuit as a body to compel compliance, which has additional enforcement provisions (including contempt orders by the court for noncompliance) not available with the bare law and no court case,

(3) Taking any avenue open to the public at large (including individual lawsuits, public advocacy including including electoral advocacy against any elected executive officers involved, etc.).

What is not generally an option is unilaterally assuming the role legally assigned to the executive in inplementing the law, or simply assuming whatever other powers you imagine are best to realize the intent of the law even if they are outside of its letter.