he's less loving

He used to say good morning to me and asked how my days been so far because his early-morning is my afternoon is a different day. Are used to text me when he gets off work and we talked for a little while until I had to go to sleep and it always say good night to me and tell me that he loves me. He would just text me throughout the day whenever he have a chance yeah there were times when one of us is waiting a while for response but there was still something. He would be affectionate and sweet romantic in his own quirky way. He will tell me that he misses me and that he loves me and send me random selfies. And I would do the same for all of those things. 

Lately things of been different. He's been busy with work but it's at the point where I hear from him once a day if I'm lucky and I just thought that he would make time for me. There aren't any good morning tax no good night ones either no I love use hardly any I miss you. The lack of contact is breaking me. Not having physical contact with him I have excepted because I love him so much but wondering if I'll hear from him today is taking a toll on me. 

Last night after a string of shitty days I broke down I texted him asking that even now it's probably not going to happen can we talk soon. I got a response and had an infection coming out so he had to clean his bark but after duty he could hopefully Skype me. I told him I wasn't happy about that because I really needed someone and I really needed him. Told him that and he offered to listen via text while he was taking care of what he had to do I told him that there's been a lot going on that I don't want to wait days to hear back on. He promised to respond and was able to keep that one to let him sleep because I am getting off work is middle of the night for me. For that though I poured out everything at saving for almost 3 weeks and a lot of it was shitty. He kept saying that he was sorry about that and sorry about how busy he's been because of work and he's told me he's sorry about being busy for work a lot before but I feel like that's all I hear from him. He hardly uses at the nickname he has for me and he rarely says that he loves me anymore. 

I don't know what to think I don't know what to do please help.