Is it a condition to recite Surat Al-Baqarah after three nights or days at the same time one recited it the first time, or is there flexibility in that?

Restricting the recitation of Surat Al-Baqarah in the home to either night or day, or restricting the expulsion of Satan to three days, has no authentic Hadith from the Prophet, peace and blessings be upon him, to support it. What is established is that Satan flees from a house in which Surat Al-Baqarah is recited. The Hadith: "Do not turn your houses into graves, for indeed Satan flees from the house in which Surat Al-Baqarah is recited," is authentic. Ibn 'Uthaymeen said that the reason for this is the presence of Ayatul-Kursi within it. Another Hadith mentions the virtue of reciting the last two verses of Surat Al-Baqarah, and that they suffice for whoever recites them in a night, and they expel Satan from the dwelling for three nights. It was said that they suffice him from Qiyam Al-Layl (night prayer), or from Satan, or from calamities. Reciting Surat Al-Baqarah in homes expels devils without specifying a time, and the matter revolves around its recommendation and increasing its recitation.