I have removed tiles from my bathroom and the plasterboard has come away revealing a wall with cardboard studs, the plasterboard is stuck to these. It is not the egg box style. I do not want to disturb other rooms in the house on the other side. Would it be practical to replace the cardboard with wooden studs to top and bottom plate, board bathroom side then screw plasterboard on the other side directly to these or do you think both sides need to come down and start again?