I have a dangerously similar story.
I’m 53 tho.
About 5 years ago, I slipped getting into the pool and thougth I’d sprained my wrist. Strangely it was fine if I kept it straight but hurt if I flexed it. I treated it for a sprain, but after about 6 weeks, no improvement. X-ray was inconclusive so off to a specialist. He ordered an MRI. That showed a bruised lunate bone. He said he’d re MRI in 3 months. If it had improved, even a little, it would keep improving and no further action would be needed. If it hadn’t healed, it never would, and would need surgery (apparently the bones of the wrist have poor blood flow and in many people it’s barely enough to keep the bones alive, but not good enough to allow healing). IF you let teh bone die, it crumbles and you lose use ofyou wrist!!! They then have to seize it in place with plates and screws or your wrist just goes all floppy!
After 3 months, no healing so surgery was required. I had a chunk of bone, with artery attached, grafted from my (radius?) onto my lunate. Recovery was same as for a broken bone, meaning about 12 weeks before full strength.
While the surgeon says the operation was a complete success, I’m less happy. I get sharp pains like someone is slashing the back of my wrist, if I flex more than 45 degrees and apply any pressure. I can do chinup (well, not after Xmas
but for pushups, I have to have to do them with a fist, not with my palm on the ground. Alternatively, I use a pair of dumbells on the ground (the six sided ones, so they don’t roll). Not a biggie, but not 10/10 either 
The worst part is when I get conjugal visits with TriSpouse, which often include the pushup style missionary position, I need to use the fist in the pillow techniqe rather than a flat palm. While that might seem pretty minor, it takes a conscious decision to do that (I invariably forget until I do it wrong, ouch) and that interrupts the moment so to speak.
I’d say get the operation, as the option of the bone dying, and having to have your wrist locked into a rigid position, is not realistic to say the least. I hope you have more complete recovery than I’ve had. That said, I have the use of my wrist, and no longer do push ups. Pretty good solution if you ask me 