I want to transfer back to my old school

I recently left Cornell University to attend a state school and now commute from home. This was primarily due to financial reasons as I took a semester off at Cornell and when I cam back from volunteering abroad, my parents told me the state of their finances and that we would not be able to afford my ivy league tuition. I was strictly against taking loans at the time, however, due to the current state of dissatisfaction I’m in, the trouble I’m having adjusting to social and academic life (I’m a junior), and having to live at home I am extremely nostalgic and want to go back to Cornell. I’m not sure if I should just stick it out because I only have potentially 3 semesters left, or if I should go back because I really miss it.

Just looking for some guidance.
Also, I’m not sure how the transfer application work since I have already been a Cornell student.