Should I come to Delhi for Mains 2022 preparation and test series?

I'm new to forum, so it's my first post. I have been preparing from 2019 July. This was my 2nd attempt, couldn't clear it. In 1st attempt I got 60 marks. In 2021 exam I was getting 87-92 from different answer keys. Having read all basic books and refrence books, I am confident that I may clear prelims next year in my 3rd attempt. But, I'm not prepared for mains, have never done answer writing, not completed ethics till now, and other topics which don't overlap with Prelims. I have been preparing from my hometown in UP.

My questions are-

1- If i should come to Delhi for next 6 months and do a full fledged preparation for next attempt?

2- Should I take test series of Mains as well, or it should be done after Prelims?

3- Or I'm panicking too much and it can be done from home as well, for the context, I have good study environment at home, because only 2 members (me and mother).

Please, guide me if anyone can.

Thankyou 🙂