B2 visa slots in India

Hi, I am applying B2 visa for my Mother- in- law from India as her brother is staying in US. I filled DS 160 and paid the fee for scheduling visa slot. But from so many days, I am not finding any slots in Hyderabad. The website shows that there are slots for OFC but there are no slots for consular post.

Can anyone suggest what I need to do? Can I check anywhere else for finding slots availability?