EY GDS offer letter generation

Hello, I have given interview for SAP IBP Senior Consultant role and final face to face 3rd round finished on 3 April, 2025.

On 6 April, I got mail to create account and send CIS details along with aadhar, salary slips and othe details.

On 7th I got call from HR and negotitation also completed. After negotiation she completely agrees with my expected package. She told me once she got approval, offer letter will be shared. On 10 th April, I also connected with HR on call, she told me it would took some time as there is some event ongoing in EY GDS this week. By next week she will try to get approval. However, till now I didn't heard anything.

Any idea what should i fo next and generally what's the time period they too to generate offer letter?