There is no difference between the month of Ramadhan or the days of Ramadhan

I used to read in volume 3 of ‘The Enlightening Answer across the Ether’ [book with the questions and answers from the Imam] and I realized the sentence (the one fasting everyday in the days of Ramadhan) ..I paid attention to the words of Sayed Ahmed Al Hasan about Ramadhan when he did not add “month” and I found religious accounts from Ahlulbayt pbut saying that Ramadhan is a name from the names of Allah and it is forbidden upon a person to say Ramadhan arrived and Ramadhan went away, so I wanted a clarification from you