How would you feel in this situation?

My boyfriend & I have been together for 3 years. I have been trying my best to be better for myself which I feel like I have been doing really good. I haven’t been getting upset or mad or even raising my voice or saying mean things. Recently, we have been not communicating or even talking. It’s not extreme to the point, but is definitely something that bothers me a little. It definitely doesn’t bother as me as before when we broke up in January. The break we had was definitely needed and take some time apart to think about what we want. I feel like whenever we talk, he’s just responding. He’s not really talking to me. I went to Mexico with my family for the weekend. I still messaged him and talked to him and asked him how is weekend has been going, he didn’t even respond to it. I asked him again how is your weekend and he still avoided it. I asked him twice to make conversation, and he ignored it. I definitely give him his own space especially when he’s with his family or at work. I don’t beg for his attention as much but this makes me really upset when I want to conversate and he doesn’t really acknowledge. I do a lot for my boyfriend for him to not talk to me. He always ask me to help with his college work, especially when he’s tired from work when he asks me around 9-10pm at night which I always help him. I always do it for him, it’s always 3-4 assignments. I stay up doing his homework until 1am. I do it because I love him & I know he’s tired from work. Sometimes, it feels like he uses me because of my kindness. But when I ask for something he makes me feel bad for it. I don’t have to help him with his work, that’s not my responsibility. I have my own work and exams and go to a university whereas he goes to a community. I did community college classes several classes when I was a senior and it was cake work.