Advice on investment management career

Hi, I am a newbie here. Looking forward to some honest advice on this career choice. I am going to be a MBA student in one of the S16 (school does lean towards finance), trying to break into the world of finance. Non financial background. Hold a Ph.D. degree in STEM field. Previously a sr. scientist then MBA this coming fall. I am thinking about several career switching options and want to seek some good advice on this investment management path. Don't have a CFA right now, but definitely aiming to get it during MBA if decide to go down this route. Have some level of investment knowledge. I do have a long history managing my own PA via L/S. I heard IM is pretty hard to break into for people who are previously outside of the related realm. Thought about IB as well, but I am a little introvert and networking crazily with 60 recruiting bankers sounds really daunting to me. Welcome any suggestions on this career choice from experienced people.