Yellow slip 221 G

I am an F-1 applicant from New Delhi India. My visa on hold for Admin Processing 221(g). I had my visa approved during interview. But they returned my passport with a yellow slip after 2 days. I have submitted DS-5535 Form as asked.
I am very scared if I will be able to attend University. My classes starts in August mid.

Do you have any suggestions what to do?
Is anyone aware about the timeline?

If all the documents and information you provided is legit, there is no need to worry.

They are legit.
Everything in my DS-160 is correct.
I just want to get it done before August. I hope it gets approve soon