Singapore CPF distribution and Taxes

My CPF account was closed last year 2024 and amount (principle contribution + growth) was distributed to me. This was before I became a US person for tax purpose.

1. As per guidance from my international tax practitioner , only the growth on initial principal contribution is subject to US tax. Is this correct?

2. where in turbotax I should enter the distribution (growth) amount for taxes. What forms apart from FBAR and 8398 I need to fill out?

 

Thanks,

Arup