if the project description lacks information regarding the project size, (its generally recommended to discuss with a mentor but as the deadline is approaching) as a general suggestion,
I would recommend the following 2 approaches:
1. Self-assessing the time you'll need to develop the features. Based on this assessment, compile a list of features and their corresponding time requirements.
2. If feasible, explore past projects similar to the current one and use them as a reference point for estimating the duration needed.
Regards,
RD (contributor @catrobat)