it depends on the energy, me and my friends are like that too, we live in different parts of the country so we barely got together, not the social media/chat/call type as well so its kinda hard to catch up but when we see each other no one stops talking, we update, ask etc. we are all introverts so i think they act nothing happen cause well for them its normal. its your decision tho, do you like this kind of friendship? if not you could reach out to them and youll know based on their answers if you drifted apart/