I want to give up but

So me and my ex have been talking again for about 3 months now. And I kept having these feelings that he was only talking to me again because he was bored or when it was convenient for him. We haven’t discussed our relationship or the possibility of getting back together because I wanted to do it in person and because of distance it was hard to plan. However he recently started a new job that has long hours and as soon as this job started he just started acting the same way he used to when we were together and about to end things. He started leaving me on delivered for 8-9 hours at a time even though I know he was on his phone I mean what job doesn’t allow for breaks?? When he did respond it was very short and so I responded back short too w a simple Ok. He left me on read and I got so angry because he was the one who started acting different and yet when I do it, it’s a problem? So I texted him again saying he was the one who acted like a d*ck so why leave me on read. He hasn’t answered but he’s been active and at this point I’m done with the games. I feel like I’m going down the same road I was a few months ago and I don’t want to repeat that hurt again. It just makes no sense – if you don’t care for someone why spend everyday in and out texting them and holding conversations just to do this and act so cold. He is definitely the petty type but I didn’t even do anything wrong so what is there to be petty about. I want to cut him off entirely from my life however here’s the but. He has a piece of jewelry of mine that I adore and he knows this I love it so much and I genuinely cannot replace it. It’s really valuable to me and I want it back but how can I get it back when he won’t even respond to my first message. I just don’t know what to do. I’m more sad about potentially never getting my bracelet back then losing him forever at this point which says a lot too I guess.