The core idea has been written into an English SCI paper, and the tutor said that minor repairs should be made and then rewritten into patents, okay?

No, the format of patent application documents and papers is very different, which needs detailed revision by professionals. A simple revision of a paper cannot meet the writing format of patent application documents. Patents need professionals to write. Of course, if the paper has been published, the possibility of applying for a patent is very low, so be careful!