Namorhat isn’t a term I recognize as a standard Jain liturgical item. It’s possible you mean Navkar Mantra (Namokar Mantra), which is the central prayer in Jainism and widely recited by many Jains.

If you truly are referring to Namokar Mantra, here’s the idea in brief:

• Why you might be reciting it alone: it can happen due to family tradition, personal discipline, a teacher’s guidance to begin with a simple, foundational practice, or because you’re in a setting where group recitation isn’t available. Sometimes individuals start with one core mantra and gradually incorporate others as their practice deepens.
• How to expand your practice: you can add other authentic Jain prayers or stotras over time (e.g., prayers honoring the Tirthankaras, or sutras like the bhavya/karaniya prabhasa). It’s good to consult a guru or a respected elder in your tradition (Digambara or Śvetāmbara) to learn appropriate sequences and pronunciations.

If you meant something other than Navkar Mantra, please tell me the exact term or provide a bit more context, and I’ll clarify its meaning and usage within Jain Dharma.