Maintaining a Budget of $500/Month as a University Student, Possible or Impossible?

I'm a University Student. I've been trying to reduce my monthly expenses with some progress. I heard that some people are able to sustain their lifestyle within a $500 budget. I was wondering how they are able to do so.

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The following are some expenses I incurred as a student:

1. Food
2. Transport (Private-Hired Rides $30~$50/ride, depending on the situation, morning class, emergencies, Public Transport $2.20/ MRT ride, home to school)
3. Stationery, books
4. Misc, Etc

I don't stay in a hostel, so no rental fee. My Telecom bill is currently bundled with my family so no telecom bill.

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I also save $15/week from my allowance.

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I received a weekly allowance of $100 and I top it up with another $150.

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Any suggestions or advice that you all can share with me so that I can reduce my expenses and stick to a budget ($500~$700/month)

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What are your weekly, and monthly budget that you have stick by and how are you able to stick to them?

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Thank you for taking the time to read and thank you for sharing your thoughts, suggestions, advice, etc. 🙇🏻‍♂️🙇🏻‍♂️🙇🏻‍♂️