Boyfriend acting distant

So a month or two ago, my bf started going distant on me and him and I took like a small break because he said he needed space, it was about 5 days for that then we talked and got back together , he said he wouldn’t do this to him and I again but here he goes again! Ladies I’ve Been texting him and everything these past few days, he just stopped texting me, I sent him morning messages , afternoon messages and good night messages and nothing. We have each other’s location on his phone so I can see when he’s at work or when he’s home or at his brothers house. It’s the same with me as well. I texted him last night saying good night and that I loved him and everything and I told him I was here for him for whatever he needed. No reply back. I texted him this morning while I was at work and I said baby????? And he immediately called me after that on FaceTime, I didn’t answer , he called me again an hour ago and I didn’t answer that call either because I was at work , I am home now , and I am going to sleep because I work two shifts tonight. It’s funny how this whole Time I’ve been trying to get in touch with him and then he wants to call me all of the sudden two times!!! He’s probably mad because I didn’t answer and I’m sure that he sees my location and sees that I’m home but I’m not going to call him back. I think I will just stop blowing up his phone until he realizes that he hasn’t heard from me in a while. What do y’all think? What should I do?