The PNC cum AFC needs to effectively conduct in parliament a vote of non-confidence in the Government.
The President then sets the date for an election.
The AFC needs to hold the fort exactly as they are doing. It is to their advantage the longer the tenure of this dysfunctional parliament. Further, it is the presidents prerogative to dissolve parliament and call elections.
Again, and quite simply .. the PNC cum AFC simply has to successfully pass a motion of non-confidence in the government.
An election must then be held within the prescribed time.