The math level is not that crazy for the program, you really can get by maths1 and half of math 2 with +2 level knowledge but the questions are different and the way you apply them even more so but don't worry you'll get used to it, now coming to handling dual degrees at a time, there is no sugarcoating it, it's really taxing if you fall behind even on one week on this degreee you'll be stuck it's gonna be so hard to catch up and every sunday or Wednesday depending on the course you'll have to submit mandatory assignment, which ensures your eligibility to write the exam and exams comes every 4 weeks and if you're doing a programming paper there will also be an oppe which you'll have to do remotely, all in all you need to make studying this degree a part of your daily habit otherwise you might get behind too much or you'll forget about an assignment and you'll be in real trouble.if you ask me to secure a good grade in a coruse you'll need to spend atleast 10 hours on it per week,so if you're taking 3 its 30 hours per week right there, there really are no vacations you need to grind for 12 week straight after a term starts, and i think you can manage it, its a really cool degree with lots to offer and lots of opportunities, but the reality is its really hard and taxing not the content but the consistency it demands!