You can file a notice of motion in the high court, seeking expeditious hearing of the matter and the circumstances you are facing. Moreover you can write to the cheif justice High court about the conduct of the matter at the lower court and thereby seeking transfer of the case to another court.
Forget about contempt of court. It is true that High Court has directed for early disposal of case, but it could not be taken up. It is advisable to revive the matter before the High Court and seek further direction in this behalf. Now adays, there are number of litigations filed. Judges are already over burdened. And they have genuine reason and procedural trappings, where delay is bound to cause. The concerned judge might have sought extension of time administratively.