Truck is becoming progressively bumpier on road

I’ve been noticing my truck start to get really bumpy and bouncy, on freeways with slight bumps and harsh ride on street.
I’m running King 2.5 with 700# springs up front and King 2.5 with OME dakars in the rear. Truck is pretty heavy with front/rear bumpers, bed rack and RTT. Suspension setup is about 20k miles, and I’m running Yokohama geolanders at 28psi.
Is it time to rebuild the shocks? Anything else I should check?

 

Always a good idea to check nitrogen pressure in the shocks. If they are really low or leaking that can cause them to not work properly