The Prophet ﷺ did not fast in any month more than he fasted in Shaban. He used to fast the whole of Shaban. He would say, "Take on as much worship as you can bear, for Allah does not tire until you tire."The most beloved prayer to the Prophet ﷺ was the one performed consistently, even if it were small. Whenever he established a prayer, he would maintain it regularly.
حدثنا معاذ بن فضالة حدثنا هشام عن يحيى عن أبي سلمة أن
لم يكن النبي ﷺ يصوم شهرا أكثر من شعبان فإنه كان يصوم شعبان كله وكان يقول خذوا من العمل ما تطيقون فإن الله لا يمل حتى تملوا وأحب الصلاة إلى النبي ﷺ ما دووم عليه وإن قلت وكان إذا صلى صلاة داوم عليها