The interview time of civil servants cannot be changed. If you give up here, you give up the exam. He won't change the time for your personal reasons.

However, under normal circumstances, the thesis defense can be postponed through consultation with the school. As long as you submit the relevant examination certificate, a copy of the admission ticket and the examination schedule to the school, you can apply. The school will still support students in this matter.

I hope my answer is helpful to you. If in doubt, please consult the public education enterprises in China.