I had been reached out by a Google Recruiter around two weeks back and we had a discussion about interview dates, He asked me about my potential dates as per my prep time etc. and we finalized on a date which is after 4 weeks. After my confirmation, I received email invites for those dates from Google. Now that the interview time is near, I feel like I am still not at my best and would do better by preparing more for an extra 2-3 weeks.
Is it fine to request another 2-3 weeks extension? Has anyone ever been in similar situations before with Google? Do they allow extension of the initially locked schedule.