Extremely confused as to the status of my friendship

I have a friend who texts every day and we have texted everyday even if it wasn’t much of anything at all. I recently noticed a shift in their availability, and kind of their attitude towards talking to me as well. Out of the blue the last two months has been rarely more than a hello hope you have a good day type of text and that’s all. When I asked them if everything was okay it’s just that they’re busy. They just have a lot going on right now and can’t text much. I understand things like this happening but something doesn’t feel right and it’s been almost two months of this. I feel like I don’t know what to do or say and continuing to ask if everything is okay between us doesn’t work. So, should I just stop caring? It feels weird for being upset because I do technically get a daily text but one text a day isn’t really a conversation yah know? I’ve started distancing myself and then when I act standoffish is when they lean in and want to talk more but at that point I’m like kind of irritated. It feels a little like a game. Any advice? Or am I just crazy?