i finished it... after a month... and i am going to say some things that may come a bit harsh. is that okay?
i can't pinpoint where exactly but i think you got disconnected from the story somewhere in the middle. it is either that or it wasn't that thought about. the first several chapters were very immersive but the middle feels more like you were just checking a list of events. that or you envisioned the first and the end part as i see that you rebounded in the later but couldn't find the right way to tie them together. if the tie is the problem, don't try to continue. just stop. read what you had written. think about what should come next. what feels right. write it and read again from start to see if they fit. if it is disconnection then wait. write something shorter. listen to a music you like. read what you had written again. see if you can reconnect and continue in a way that is satisfactory. write when you feel ready because when you force it, what comes out is mediocre at best.