PLEASE HELP: I’m in a head gasket job and didn’t note which rockers go on which valve spring

Hi!
In the process of rebuilding the engine after a head gasket change. Followed gasket masters video. When I took off the rocker arms and the little caps on top of each spring, I didn’t note which spring they came from, as this info wasn’t mentioned anywhere as being super important (like big mentions for timing chains and stuff like that). So now I’m stuck because I can’t just put the valve shims (I think that’s what they’re called? I can’t even find the exact name of these caps), back on any spring, they apparently need to go back on the same spring.
I read you can do some measurements to see which valve they go on and read about valve clearance but since I’m a complete newbie, honestly any info or procedure to follow would be appreciated. At this point I can’t really bring it to a shop, it’s all dismantled in my garage.
I have a Toyota mechanic acquaintance coming for the timing chain and he’ll check these when he comes but told me to figure out which valve they go on as it’s a very long tedious process.


Pics to show what part I’m talking about

 

Ok going based on these diagrams I’m pretty sure the thingies I’m talking about are valve stem caps! So yeah apparently they’re all unique to like the valve stem? I had read this elsewhere as well and then the mechanic told me that

 

Yeah nothing is going back in the same place LOL I didn’t mark where the lash adjuster, cap or rocker arm came from -_-

 

I read a few places online that they need to go back in the same place, and in the manual it states to put them back where they came from but no extra info. For me it’s more the mechanic who’s really pushing saying it’s a big issue and that I’ll need to measure valve clearance or something like that, with a feeler gauge

 

I read a few places online that they need to go back in the same place, and in the manual it states to put them back where they came from but no extra info. For me it’s more the mechanic who’s really pushing saying it’s a big issue and that I’ll need to measure valve clearance or something like that, with a feeler gauge

 

I read a few places online that they need to go back in the same place, and in the manual it states to put them back where they came from but no extra info. For me it’s more the mechanic who’s really pushing saying it’s a big issue and that I’ll need to m

 

It’s actually the mechanic who is like “supervising my work” who first started telling me it was super important but I’m not even sure he’s aware my Prius is a gen 3 -_-

 

Great news just checked them in detail and they all have a diff number on them. Haven’t figured out what the number means yet but each has a unique number after the initial part number which I’m sure indicates something about position. So I will go down the google rabbit hole unless someone has some insight