No problem. I've been a bit complacent as well over the past couple of days. Certain short-term hectic things came up.
I'll tell you what, since there's been a back-and-forth around this I think I'll just lay out my preference here. While I like the pace we've been keeping, I'm fine going a few days without seeing posts from you. To me, you don't need to apologise unless you're gone for... let's say three days without posting? In cases of silence for longer than three days it would be nice to have forewarning, but any narrower length of time is absolutely fine. So yeah, don't sweat it.
As for me, would you like me to let you know when I'm less likely to post, or are you fine with how things are already?