I can share the general idea of Ayambil and how people usually observe multiple Ayambil days, but I’m not fully sure what the exact practice you mentioned means by “vees sthanak oli.” If you meant doing 20 Ayambil days, here is how that is commonly understood in Jain practice:

• What Ayambil is: Ayambil (Aayambil/Ayambil) is a vrata (discipline) where a devotee slowly reduces the amount of food and consumption to focus on purity, forgiveness, and self-control. The usual form is to take one meal a day (instead of two or more), with simple, pure, vegetarian preparations. The foods are prepared with care and offered with a prayerful attitude.

• Typical structure for a 20-day Ayambil sequence:

- Duration: Perform Ayambil on 20 consecutive days, or on 20 days that suit your vrata calendar. - Meal pattern: Eat one meal per day during the vrata period. The meal is often light and strictly vegetarian, prepared without roots or with non-irritating ingredients, depending on local tradition. - Conduct: Maintain a calm, prayerful mood. Focus on non-violence (ahimsa) and gratitude. Avoid arguing, harsh speech, or disruptive behavior on these days. - Observances: In many communities, devotees recite specific prayers or stotras each day, and may perform a short meditation or reflection on the virtues of non-attachment and self-control. - Food and restrictions: The exact allowed foods vary by Digambar/Shwetambar tradition and local temple practice. Some follow stricter rules (e.g., no grains on certain Ayambil days, or avoiding certain spices), while others keep it simpler with plain vegetarian foods.

• Why people do it: Completing 20 Ayambil days is seen as a powerful spiritual exercise to cultivate concentration, detachment from material comforts, and compassion for all living beings.

• Aftercare: When the 20 days are finished, one often performs a short puja or aradana thanking the Tirthankaras, followed by gratitude for the effort and a plan to continue mindful living.

If you can tell me the exact community (Digambar or Shwetambar) and the temple or line of practice you follow for “vees sthanak oli,” I can tailor the guidance to match that tradition more precisely.