Is anyone else here doing a pre-university YINI placement at Rolls-Royce?

I've bee told I have the placement and they'll discuss a starting date with me after they've finished my background checks but it's been a month of them sending me more emails with documents they forgot to ask me for and such. How long did it take before a starting date was confirmed? I've basically been waiting since the start of summer for all the stages of application and I'm getting quite anxious now. Thanks