It sounds like quite a bit for one day.
For me too, I think there is a dif between squeezing rep type and just holding or static strength. (just sayin')
These forearm muscles are small and get trained fairly quick (like calves) IMO, so I feel, a lot of volume is not necessary.
The bottom line will be "your" recovery and how much you are improving if so???
If you are squeezing (say an Ironmind #2) for reps and only started with a single, then you are gaining, if not, you are just spinning wheels.
Here is what I used to do after a W/O.
Static holds for time in a rack maybe 3 sets letting the grip eventually fail and the bar just escapes from hands (great grip/hold builder for hanging on to heavy deads)
Pinches of concrete block, trying to crush with a wide hand.
Ironmind grippers for say 3x10-20 reps
Second day might be wrist curls starting with a heavy weight and just stripping weight off as my forearms blew up or say wrist rollers up and down with weight rope etc.
Overhead holds (sup and pronate) maybe on a chin bar with weight attached to belt.
Thru the week I might throw in some gripper reps while watching the tube!?!?
After a few sets of these my grip was fried.