Materials to be prepared for applying for computer software copyright include: print application form, software code, software operation manual, identity certificate and ownership certificate filled out by official website. The application time should be 30 working days from the date of acceptance. What we are talking about here is working days, and with the waiting time for acceptance, it will take almost four months. . .
You can apply for the confidential preservation of the code involving confidential parts. If the amount of code is large, you can consider skipping the confidential part, because the requirement of software copyright only needs the first 30 pages and the last 30 pages of code, not all the code.