Is it normal for my boyfriend to stop talking to me?

This is embarrassing but my boyfriend of 3 years just stopped talking to me out of the blue. He’s expressed he is not sure how he feels about me, he said it’s been going on for a while but I’ll he didn’t make it obvious up until a few months ago. He also said that our relationship is pure and good that there’s nothing toxic and if they were to ask him why we split he’d feel bad. He says he knows he’ll regret letting me go and that any other guy wouldn’t second guess being with me but he says he wants to “stick it out “. He says he “cares” about me and “loves” me still. He only ever shows up when he wants to have sex. I miss him so much. he’s on a work trip and he hasn’t talked to me in 3 days since he’s been there at all. He would text or call me even a few weeks ago just to check in but now he doesn’t seem to care. I’ve been nothing but patient. Now I feel like we’re over and I don’t know how to move on. I’ve been crying for a whole month straight thinking we could make this work but he doesn’t seem to care at all. I try to talk to him but he doesn’t say much other than what I had mentioned. Not to mention he changed his Instagram password out of the blue yesterday. I just don’t know what to think anymore. Is it possible for a reconciliation?
Is it normal for my boyfriend to stop talking to me?
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