Student + OE??

I’m a senior year engineering double major and I’m currently interviewing for 2 roles. One is an internship with 20 hours a week , pays decent, the other is a contract customer support role that’s meant to be flexible ( past employees say that it isn’t that flexible , they just say that on paper) the pay is wonderful. I need the money for my senior thesis and project ( running a lot of experiments, buying materials, running materials test) and the res of my tuition.

My grades in one of my majors are excellent and average in the other, though that one did increase a bit last semester. You can quit the customer support role at anytime. (Says so in the contract). I was thinking if I should maybe do both, drop the support role after a month or 2. This is my first time OE for money.

The last time it was for 2 hybrid internships, one paid , the other unpaid and I wanted not the experiences for my resume and it wasn’t when school was in session, any advice would help.

Also in my country there are non interest student loans provided by the government but, there’s a fixed amount you can borrow and it’s high.

PS. Both majors are engineering, I feel like everything’s a mess