I recently came to know that I belong to Shudra caste. I have read that Shudras are meant to do these- serve others, not own property, live in isolation, cannot touch others nor come into contact with their belongings, cannot enter other peoples homes, cannot sit with people of other castes, making friends with higher castes is out of question, cannot keep idols of God at home, drink water from drains and puddles. On the contrary I have been- pursuing my goals, live in society, know and interact with people from higher castes, went to their homes, touched their belongings, drink water from same place everyone drinks, and the worst of all- I pray to God and know some shlokas too. After comparing my deeds to the ideal Shudra, I am deeply regretful for my acts until now. I wish to correct them.
How can I become a Shudra, like they used to be earlier in history? Give me a detailed guide to it just like Brahmins have for them regarding priest rules, worship rules, food rules, etc.