Ugh. How do I introduce the idea that my friendship isn't being reciprocated without making them mad at me or feeling bad about it?

I'm an INTP and I have an INFJ friend who never texts me first or asks me to do stuff, but seems to still thoroughly value time we spend with each other. I stopped communicating for three days and I got nothing back two different times. Each time I do this, I don't think they care about me until I say "I want to talk about something" over text and then get 3 texts and 2 calls (that I ignore, because as soon as they do this my spine falls out of my back because suddenly it seems they do value me). What should I do?