Ya ustadh if you are able to then please ask your sheikh about this, a Hadith comes in musannaf abdulrazaq: أخبرنا عبد الرزاق قال أخبرنا معمر عن ابن طاوس عن أبيه قال قال رسول الله صلى الله عليه وسلم: لا تتخذو شهرا عيدا ولا تتخذو يوما عيدا Is it correct to use this as evidence to prohibit birthdays?

The narration is not needed for this, because a birthday is an ʿid, and the Prophet ﷺ said when he came to Madinah and found them with two days they used to play in that Allah has replaced them with better than them, the day of al-Adha and the day of al-Fitr (reported by Abu Dawud and al-Nasa'i; graded sahih by al-Albani rahimahullah).