Loosing feelings for my boyfriend

I don't know what to do...
My relationship is LDR and April will be our 1 year. 
It's gotten to that point now that I'm used to his busy schedules that I sometimes forget that I even have a boyfriend. 
1. I don't get bothered if he doesn't reply
2. When he asks me to send him a pic of myself, I ignore 
3. Sometimes when he texts I don't feel like replying
4. I'm starting to feel single 
5. He doesn't give me attention and I'm not bothered about it 
Is it my fault that I feel this way or is it his. He doesn't give me attention anymore and I just go about my day as if I don't even have a boyfriend.
When something happens in my life. I keep it to myself and never tell him because I know he won't have much time to talk. For everyone wondering how he's so busy. He's a lawyer. 
I don't feel happy. I just feel drained. I tend to not want to put in any effort  because I'll always be disappointed. One time he didn't reply to me until I initiated it (took him 5 days to reply)
I kinda feels like he should just break up with me!! 
Am I overthinking too much?? I really don't know what to do and why I feel this way. Is it my fault I feel  this way or is it his?