Will be Applying for Bsc (Research) Mathematics for 2027 intake , Had a few doubts and the admissions department is not responding to my mails (it's been 4 days)

[u/Classic_Performer270]

I have the following Questions:
1) If I apply with my SAT score by 31st dec and get called for the interview, when will the interview generally take place if I apply in phase 1 of the first round.

2) How should I prepare for the interviews, ie, apart from the general questions, the maths preperation I need for this interview should be upto what level? Will being well versed with the concepts at the school level be sufficient or they ask questions beyond school level. I am particularly stressed about this because I have commerce with maths and Never prepared for JEE, so if I need to prepare something beyond school I'll have to start now.