Shreni Tap is a Jain austerity done in a systematic sequence of fasting and partial fasting, usually under guidance of a गुरु or learned साधु-साध्वी, because its exact form can vary by tradition and local practice.

General procedure

1. Sankalp (resolve):

The person takes a firm vow to begin the tap with purity of mind, speech, and body.

1. Begin with a suitable sequence:

The tap is performed in an orderly pattern, usually increasing or decreasing the level of austerity step by step according to the accepted method in that tradition.

1. Maintain discipline:

During the tap, one observes: - ahimsa - truth - non-possessiveness - restraint - devotion and equanimity

1. Follow proper food rules:

Eating, if allowed in the sequence, is done according to Jain rules, with complete restraint and without attachment.

1. Avoid carelessness:

One should not perform the tap with pride, show, or haste. The inner भावना of purification is most important.

1. Completion with parana:

After the scheduled austerity is completed, the tap is concluded with parana at the proper time and in the proper manner.

Important point

In Jain Dharma, the exact pattern of Shreni Tap may differ by Digambar and Shwetambar traditions or by local custom. So it should be done only under proper guidance.

If you want, I can also explain the meaning of Shreni Tap in simple Gujarati/Hindi style.