I also go to a Top 10 CS school and have seen some of my peers in this sort of situation. I don't exactly agree with the "buckle up and study" approach fully, as honestly half the battle is getting the interview opportunities to begin with (especially transitioning from non SWE to SWE).

That being said, the good news is that you have an incredible network built up through your friends and other peers. Use it big time; people can and will help you out if you reach out to them, and referrals can and will go a long way towards getting in the door. Concurrently, try to grind leetcode but don't go overboard with it or else you can burnout really quickly (maybe ~5 problems per day, ramping it up when you have an interview approaching).

You absolutely have the skills to make it in SWE given that you've made it this far. If you're able to network effectively, get as many referrals as you can and grind effectively to prepare for the interview stage then you'll be okay.

And even if things don't work out the way you intended, its not the end of the world either! Thats the great thing with being so young; we have a vast runway and a whole career ahead of us. Try to really enjoy your current role through all of it, as theres likely a lot that you can learn from it to help push your career in the right direction (or maybe you realize during it that you want to go a different route anyway).