The best treatment which you get is cupping. or aloeswood and do not torture your children by pressing their uvula.
أَنَّهُ قَالَ إِنَّ أَفْضَلَ مَا تَدَاوَيْتُمْ بِهِ الْحِجَامَةُ وَالْقُسْطُ الْبَحْرِيُّ وَلاَ تُعَذِّبُوا صِبْيَانَكُمْ بِالْغَمْزِ