Certainly recent signals are pointing that things are worse and quicker.
'China will challenge US naval supremacy within a year'
Personally I think it is too late. I also recall experienced members talking about 2020+ being the period where things are expected to be, different. I think we are nearly already there. By 2030 I would expect we would be out the other side and there would be a new world order of some sort. We also have to prepare for that too.
Nocookies
We should have had Sea5000/Sea1000 already hitting the water (maybe IOC 2020), but that would have required and almost impossible set of circumstances and we just weren't that pessimistic enough then, we predicted things would generally happen at the same rate and there wouldn't be this increased tempo of events.
I think we have a good plan for the ship building aspect, but if we intend to bulk up by ship building it is now (mostly) too late. We should probably look at OTS purchases that can augment what we have and what we will have. Force multipliers, supporters and upgrades. I would be putting orders for things than can easily be accommodated. We can probably replace Harpoon with NSM in a short amount of time, increasing the range, the number and the effectiveness of that type of weapon very significantly. We can maybe keep harpoon long enough that there isn't a capability gap if we act now. Putting 12 NSM box launchers on all the surface units would be something we could announce now and be mid way though doing it in a year or two. No hole cutting required, there is still significant engineering, but it is more of the doable kind. Acquiring some seaRAM launchers I think would be in much the same category. If we started aggressively acquiring now we might get in before the rush.
We need to seal and strengthen the alliances of what we have. Batten the hatches. We have now pretty much selected most of the medium and long term build stuff. I wonder if there will be a rash of announcement for more immediate capability.