New to Fizz--request for extra data

Hi, I'm new to the Fizz family, and I mistakenly estimate my plan. I thought I could use my school network to study, but actually--the school's wifi in my dormitory is soooooo poor! I have to use my hotspot to study😭. I've changed my next-month's plan, but for this month, my data is running out. Could anyone lend a hand?

My referral code is ZWFP2. Hope u will have a wonderful dayyyyyy!