Seman leakage while sleeping is called night fall in common language. it occurs usually to the unmarried males who don't masturbate. Having night fall 2 to 3 times in a month is normal and doesn't need any treatment. Incase the frequency is more than once a week,then it should be treated. it's easily treatable with Ayurvedic medicines and proper counselling
Next Steps
You should consult a good Ayurvedic Sexologist
Health Tips
Stop watching porn and reading erotic literature if you do.Wear lose clothes while sleeping. Don't drink milk before sleep.Sleep on your back.