I am currently planning on moving to Brazil next year through the means of student visa (Vitem IV) and I will enroll in a Portuguese for Foreigners class most probably at UFRGS in Porto Alegre. I know that I will be given a 6/7 month visa initially and then I will have to renew it the federal police a month before expiry. I work full-time teaching English during the day and I am already fluent in Portuguese. Those classes will only be a means for me to get a visa so that I can be with my fiancee until we get married. My question here would be whether or not I can switch universities for the second semester and still get my visa renewed as I probably will not be able to attend the classes and hence I doubt UFRGS will give me the required renewal letter for me to stay on for another semester.
Any experiences related to my situation are welcome!