If your English foundation is zero, I'm afraid it will take you at least half a year to learn English. At present, foreign universities generally need six points for undergraduate courses. Although IELTS does not require many words, it must have at least Band 4 (about 3000-4000 words).
Immigrants usually get about 5 points, unless going to Canada is more demanding.
IELTS pays attention to practical application and examines students' English ability, but there are also shortcuts. You can spend some time reciting machine classics, and of course you have some luck. But it is better to improve your English ability honestly, and read more, listen more, write more and speak more.
According to the research report of Cambridge University, it will take about three months to improve the score of 1.
Recommended teaching materials:
Required: Cambridge IELTS 1-6
Listen to this.
You can also look at the books published by New Oriental and New Channel.
I recommend going to New Oriental for a basic class of about 90 days.
Good luck!