You have30-60 days till harvest.
I am growing garlic for the first time too.
What is you bed made up of?
Is this were you planted garlic in last 2 years?

Harvest for later varieties, in my area, is mid to late July. Last year, I harvested my two hard-neck varieties on July 29, and had maybe 5% which had grown a bit too large and burst, but otherwise a very good harvest.

But, yes, Chinese Pink should be harvested within the next two months.

The beds are a very loose sandy loam. They were well-tilled ahead of time. No garlic here last year -- there were beans where the Music and German Red were last year, and peppers and eggplants where the Chinese Pink is.

My worry is primarily that the garlic seems to be dying down a bit well in advance of harvest, without ever reaching the size on top that I've experienced with other, later garlics. Is this simply expected for earlier garlic?

The earliest of the varieties I grow, Early Italian Purple, is also looking a bit peeked when compared to the monstrous and very healthy hardnecks next to them. It is to be expected, however, as they start to grow the minute they are planted in Fall and continue to grow all Winter throughout the worst of our weather. The purples are generally taken the first or second week of June.

Planted three new-to-me varieties this year which are supposed to be early as well, but they are still growing and putting out leaves. I expect that these won't be as early as the purple, but one can hope.

I have some very early garlics in the ground and none finish before mid June here outside Portland. I seriously doubt your Chinese pink will be done before then.
I think what you're seeing is a nutrient deficiency, mostly (but not limited to) nitrogen.
High rainfalls will flush vital nutrients from the topsoil to where shallow rooted plants like garlic can't access. Maybe Chinese pink has a smaller root system than the other varieties you're growing.

I suggest mulching them all with some good manure based compost and watch then all grow like crazy when it starts to warm up.

I can understand your concern. Cold injury can look like that, but none of my garlics (including little Korean Red) have complained about the hot/cold spring yet.

White rot can be carried on seed, and premature stunting is a primary symptom. I'd keep pulling sample plants to look for evidence of root rot problems.

Here is a link that might be useful: white rot of alliums

difference in varieties but....
Bean add nitrogen to the soil.
Peppers and eggplant will drain nitrogen.
That may be having an effect as well.

I haven't seen any indication of whiterot, so I don't think that's the issue.

Nitrogen deficiency maybe makes sense, though both beds had a fairly decent amount of fertilizer made from Steve Solomon's recipe, which comes out to around 5-5-1. I'll try putting down some extra nitrogen, and see what happens.

I'm not hopeful, but I've got about fifty heads of garlic aside from the Chinese pink, so I'll be doing all right even if the Chinese pink doesn't do much.