Is it okay that I don't meet my project supervisor until I can reach a certain subgoal of a long project? I am doing a project in my university under supervision of a professor. This project constitutes many subgoals. My supervisor told me to meet with him to discuss about the project. But I couldn't reach my weekly subgoal yet. Is it okay if I don't meet him until I reach my weekly subgoal?
It is useful to meet with your advisor on a regular basis, even if (especially if!) you haven't achieved everything you had hoped to since the last meeting.

Otherwise, you risk getting stuck in this "Avoidance Cycle":



(Source: PhD Comics)

Also, meeting with your advisor may be helpful because:


If you haven't achieved your goal because you are stuck on something, your advisor may have a suggestion to help you get un-stuck.
If the project is delayed because some part of it took longer than expected, your advisor may want to re-arrange or re-prioritize parts of it to adjust for the new time frame.
Having to report back on a regular basis motivates you to keep making regular, if incremental, progress.


But these are only possible if you keep your advisor informed of what's going on - whether the news is good or bad.