Hey what do you mean 1-2 days for level 10? I joined 2 days ago, am talking there but still at level 1. Probably takes 2 weeks at least.
For lvl 10, it has been calculated as about 6 hours of nonstop chatting so when he mentioned 1 - 2 day is reasonable.
You can spend 1 hour each day and qualify at last day or little rush at beginning and slow down after...