A child with Duchenne’s musculаr dystrоphy is receiving nоninvаsive ventilаtiоn by face mask on the following settings: IPAP: 12 cm H2O EPAP: 4 cm H2O Rate: 20Inspiratory time: 1.4 seconds The child complains that it is difficult to breathe and does not want to continue the therapy. What should the respiratory therapist do first?