Kindly refer to the following link(s):
Can I fast all of Shaban or after the 15th?
Importance of Shab e Meraj | Sheikh Assim Al Hakeem
Fasting in rajab | Sheikh Assim Al Hakeem
Is there any importance of the Month of Rajab, Shaban etc?
15th of Shaban, Shabe Barat. Shabe Meraj
Sunnah acts of worship in Shaban (Fasting)
Is 27 Rajab a special day of worship? Did Isra & Meraj take place on 27 rajab?
Al Isra & Al Mi'raj: The Night Journey & Ascension of Prophetﷺ- Was it Physical or Spiritual?
How did Prophetﷺ see people in Jannah when he went on miraculous night journey (Miraj)