Selected for NABARD DA post! What to do after?

Hi, I saw my roll number in the selected candidates list for my state. And as per the notice, I had submitted my language proficiency proof via mail. However, I haven't got any mail or message from the other side. So, I'm just anxious about what to do. Do I just wait? How long does it usually take for the call letter or notice for LPT to get out?