"You know, I love emotional personal communication much more, especially with you. Do not be offended that sometimes I do not answer. Constant correspondence distracts me from business and tires me. Besides, you must agree that personal communication is much more important." All this is best said calmly, with a smile, and in person. I really understand you !!! I myself do not like constant correspondence, especially those who are offended that they were not immediately answered. Fortunately, I rarely encountered this. Notifications are evil, especially when you are busy with something. In addition, even if I’m not busy, it’s more pleasant for me to listen to the person, his stories, find out how he’s doing - in person.
Probably a difficult method, however, which once worked for me.
Show how cool you can communicate in reality and spend time together. But briefly.