Answered by Ustadh Tabraze Azam
Question: Assalam alaykum
What should I do if I have realized that I may have been performing the forgetfulness prostration incorrectly a number of months later?
Answer: Wa alaikum assalam wa rahmatullah,
Your prayer would be unaffected by your performance of the forgetfulness prostrations (sujud al-sahw) in an incorrect manner. The proper way to perform them is to (1) say one salam after the tashahhud, (2) prostrate twice, and (3) then recite from the beginning of the tashahhud until the end of the prayer.[Shurunbulali, Maraqi al-Falah]
Please also see this answer.
And Allah Most High alone knows best.
wassalam,[Ustadh] Tabraze Azam
Checked and Approved by Shaykh Faraz Rabbani
Ustadh Tabraze Azam holds a BSc in Computer Science from the University of Leicester, where he also served as the President of the Islamic Society. He memorised the entire Qur’an in his hometown of Ipswich at the tender age of sixteen, and has since studied the Islamic Sciences in traditional settings in the UK, Jordan and Turkey. He is currently pursuing advanced studies in Jordan, where he is presently based with his family.