@IsobelisAqueen I have a few things, you don't have to do them of course but I think it would help the development of relationships.
1. More JJ with Issy's family (maybe without her there) just to see them interact more and see how they feel about their relationship. Also Issy and her mum having more deep conversation and i think more of Issy's dad in general.
2. Flashbacks/conversation about Issy and JJ crushing on each other when they met and she was with John B, because that's the only part I don't love about the story is how fast she goes from John B during the summer they meet to JJ during Christmas. I know there are hints of them liking each other but I feel like there should be a little more like them texting or late night phone calls they've had, and their feelings growing.
3. Lastly, just more JJ pov because we already see how Issy is feeling about everything but I think it would be cool to sometimes see JJ's thinking process and his feelings. This could also work for anybody else's pov aswell just to see how they feel about Issy or her relationship with JJ or what the pogues are up to.
Like I mentioned, I think it would be cool and helpful if you used these but you don't have to. Anyway, great book i haven't enjoyed a JJ fanfic in a while. I can't wait to see what you have in store, the suspense is killing me.