Answer

In Jain Dharma, there is no fixed compulsory number of times you must do diya-batti in a home mandir.

A simple and respectful practice is:

• Once a day if that is convenient
• Twice a day in the morning and evening if you wish to keep a regular routine

Explanation

The most important thing is bhav — your pure intention, devotion, and remembrance of the Tirthankars.

So:

• If you light the diya daily with sincerity, that is very good
• If you do it morning and evening, that is also beautiful
• If your routine allows only once, that is still meaningful

There is no need to feel pressured by a strict count. In Jain practice, discipline and sincerity matter more than quantity.

Spiritual Understanding

Lighting a diya in the Jain mandir symbolizes:

• Light of knowledge
• Removal of ignorance
• Awakening of inner awareness
• Devotion with purity

It is best done with a calm mind, clean surroundings, and respectful feeling.

Takeaway

You may do diya-batti once daily or twice daily according to your family tradition and schedule. The real value lies in regularity, reverence, and pure intention.