I hope all is well, I have a PhD in Biotechnology and a decent job in my current company, However, my main goal is to join an MBB in a decent position. I applied to a program with BCG and that program gives you an opportunity to interview with BCG after the end of the program. I finished the interview and I received an offer thankfully. However, the offer is for a starting position and the deadline to sign this offer is one week, because the starting date is fixed. I also have interviews with Mckinsey in a month for the position that is appropriate to my qualifications. I called BCG and asked if it's possible to extend the offer deadline and they said it's not possible. What should I do given my current situation? and is it worth it to switch careers for a starting position in BCG?
I would really appreciate your input on this. Thank you.