Not much you can do until you adapt to it.
Strongman training is HARD and rough on the body.
Wear wrist wraps, get some Rehband knee and elbow sleeves…….
Ice.
You also need to monitor the frequency, intensity and duration of training.
In our programs all of the is is accounted for, but you added in Strongman (which is fine), and it may just be a little too much volume.
Also, this is HUGE:
Get rid of processed foods, make sure you eat at least 1 gram of protein per pound of bodyweight and eat enough calories to support your training and recovery. Hydrate well and sleep at least 8 hours a night.