How should I end my itekaf without creating noise and fitna?

I have entered into itekaf in a mosque who follows Saudi moonsighting whilst I started ramadhan a day after i.e. following uk/morrocco moon sighting. I chose the mosque as it was close to me and local. There are two groups/opinion regarding moonsighting - so it's not a question of following the ulemas and majority and regardless my current believe (and would like to be corrected on) if it was a question of following the elders/ulemas/majorities/wise people, the I believe Islam MAY not have prevailed as it has I.e. we may not have been muslim if the prophet saw had not gone against his tribes/elders when he (saw) recieved prophethood. Before i went into itekaf the misque imam said no issues, but now he seems to have 2nd thoughts. Please can you guide me and advise best can i complete mtly itekaf without creating noise or fitna in the mosque.