1. Determine the reason: First, you need to determine why you need to extend the deadline. This may be because you are dealing with other urgent matters, or you find that you need more time to ensure the quality of your paper. Whatever the reason, it needs to be clearly expressed.
2. Contact the editor: Next, you need to contact the editor in charge of your paper. You can contact by email or telephone. In your email or phone call, you need to explain your situation concisely and ask for an extension of the deadline.
3. Provide evidence: If possible, you should provide some evidence to support your request. This may be your doctor's certificate or your work schedule. This evidence can help editors understand your situation and may influence their decisions.
4. Waiting for reply: After submitting the request, you need to wait patiently for the editor's reply. Editors may need some time to consider your request, or they may need to discuss with other editors. Therefore, you need to be patient.
5. Accept the result: Finally, you need to accept the editor's decision. If they agree to extend the deadline, you should thank them for their understanding and support. If they refuse your request, then you should respect their decision and finish your paper as soon as possible.
Generally speaking, to apply for extending the time limit for revising SCI papers, you need to clearly express your situation, provide evidence and wait patiently for the editor's reply. Although there may be some challenges in this process, if you can successfully complete this process, you will have more time to improve the quality of your paper.