Patience, patience: it takes a while to set up something this big 8,000 miles away in a forbidding place with no existing support lines, facing obvious opposition, and with an adversary that moves around a lot. The US has to get everything in place first to do it right. Recall that it took about six months to set up Desert Storm.
Yes, I know it well. But the difference is we were up against an entrenched enemy. Here they're dispersing more and more with every passing day.
I think they are setting things up for quick reaction strikes. Get the forces in place, have the troops sitting on a hair trigger and when intelligence pops up showing a viable target, hit it fast before the roaches have a chance to scurry back under the cabinets.