undergrad student wanting to break into quant

I'm really sorry if this is not the right sub reddit for this, but I know there are a ton of really knowledgeable people on here who could direct me to the right one if so.

I love studying engineering, and I love mechatronics. But, I've started to realize that it's not inherently anything to do with, I just love problem solving in general, and I've been kinda gaslighting myself into thinking I love robots and stuff. I have started to look into QR, QT, QD. I've talked to people from the big names at careers fairs, and I even got a QR interview from IMC (didn't get past the first round tho).

I'm only second year undergrad, and obviously internships are the big thing during this time. But after researching into quant, I don't even want engineering internships anymore, I just want quant.

I know how competitive quant is. I need to live and breathe it, or so I've heard. I'm willing to do that, but I'm scared I'm gonna put all my time and thought into it, just to get rejected by every one. Then, I wouldn't have any engineering experience and idk what I'd do at that point.

Most internship programs only accept penultimate year students too, so I guess the only thing for me to do right now is upskill myself as much as I can. When I got the QR interview, I basically dedicate the week until the interview to reading, doing problems, and watching videos. But, maybe its all the hype online, I just can't seem to stop thinking that I won't make it and will be stuck with nothing.
Sorry this is kind of a ramble but if anyone has any advice or similar experience please share. Much appreciated.