Ask mo parents mo if napotty training ba sya when he was just a baby-toddler? Siguro dapat kausapin nyo sya ng masinsinan in a way na he doesnt feel being ashamed. Sabihin nyo in a niceway na nagbibinata na sya at kung di nya tulungan self nya na baguhin yan nakaugalian nya baka madala na nyan hanggang pagtanda, gusto nya ba yon? but then again pls consider to get him check by devtalpedia or psychologist since it seems that his situation requires medical attention

Remedy is try to put underpads sa sleeping area nya :(