When Does the Owner Anxiety End??

I have an 8mo. I grew up with dogs and even worked in rescue/vet med but I just cannot chill about my first dog as an independent adult. Yes I have OCD-but this is the first time I’ve experienced these feelings with any animal I’ve owned, and I’ve raised some delicate flowers.
I think everything small/typical is secretly a big issue that could be life threatening for my pup. He’s a very hardy bigger breed but if he wipes out in the yard and gets up slow I think he herniated a disc.
If he coughs or gags I think he got into something or has something stuck in his throat.
Suspiciously tired after a full day running in the field with me? Must be lethargy from eating a toxic plant or scrap plastic/metal lodged in his gut.
He’s well trained enough he can be loose in the field and house but tends to be somewhat around me most of the time-just not 100%.
I always had herding dogs so they were independent from us 75% of the time but something about having an “inside” dog for the first time in my life makes me so paranoid.
Tonight his ears seemed hot and instead of acknowledging he was sleeping in front of the fire I nearly convinced myself he has some mystery fever/infection.

Part of me can acknowledge there’s this paranoia of not worrying enough or being attentive enough that results in neglect or something fatal and that it’s just an irrational fear of losing something I love so much!

But does this feeling ever go away?? I feel like the parent of a newborn infant. My hope is by the time he’s 12mo I might feel more confident and just think of him as delicate right now. He’s proven himself to be hardy and I try to cool it thinking about how tough the dogs I grew up with were but it doesn’t always help. I am so anxious about messing up with this guy.

At what point are you not terrified of making a mistake and it costing their health? Is this just a me problem?