Answer

In Jain practice, Biyasana means eating only two times in one day, while following proper restraint.

Between your two options, the better choice is generally:

1) Eat only breakfast and lunch

because it avoids eating in the evening and supports the Jain discipline of not eating after sunset.

Explanation

In Jain Dharma, food discipline is not only about the number of meals, but also about:

• Eating with awareness and restraint
• Avoiding unnecessary indulgence
• Reducing harm to living beings
• Avoiding food after sunset as far as possible

So, if you are doing Biyasana, then:

• Breakfast + lunch is usually more suitable.
• Breakfast + early dinner may be acceptable if dinner is clearly before sunset, but it is still generally less ideal than finishing food earlier in the day.

Spiritual Understanding

The purpose of Biyasana is to reduce attachment to taste, reduce dependency on food, and increase self-control. Eating earlier in the day helps maintain greater discipline and supports the Jain value of sanyam.

Takeaway

If your health allows, choose breakfast and lunch for Biyasana. If you need an early dinner for health reasons, keep it before sunset and do it with proper restraint.