transfer time in Shanghai 30 mins enough?

Hi, I come from Nanjing and want to travel to Huangshan North on the 10th of May early in the morning. As the train is already fully booked, I decided to go to SH first and take a train from there. It will depart at 8.05 am. Will it be enough time for me to catch this train, if I arrive with a train from Nanjing at 7.30 am?

Thank you for your help.

Kind regards,
Charline