Date when Child benefit payment stopped

Good evening, I was doing my self assessment for 23-24 and I came across this question in the high income child benefit charge section: Enter the date that you and your partner stopped getting all Child Benefit payments if this was before 6 April 2024. I got a letter from Child benefit office saying that my child benefit entitlement will stop from 4 September 2023, but the last payment I received was on 29/08/23(Tuesday) and that payment was probably for the week starting 28/08/23 (Monday). So do I put 04/09/23 or 29/08/23 or maybe even 28/08/23 for that question? Thanks!

Hi Susannesi,
If the entitlement stopped 4 September 2023 then this will be the date you will enter. 
Thank you.