The inverted yield curve, as DadJokes says, is one of the reasons.
One reason this recession (if one is coming) might be a bit challenging is that the Fed doesn’t have a lot of wiggle room to lower interest rates. If we do into a recession, there’s not a lot that can be done to ease it.
Technically, there’s always a recession coming sooner or later. To me, it feels like one is likely to occur in the next year or two. Hopefully (probably) it won’t be as bad as the one in 2008. The measures I would take to prepare are pretty indistinguishable from what I do as a (quasi)mustachian: get/keep my spending low, make sure I have no debt, make sure I have enough liquidity to ride out any issues without having to dip into retirement funds or index funds, and consider opportunities to by at low rates a nice silver lining.