Update and more help needs- I’m sorry. I hope I can get this under control soon and stop bothering all of you 
Sunday: my girls and I gave all chickens a wash, soak in Epsom salt bath then dried with hair dryers until dry. I sprayed them as much as I could get on their skin of a poultry mite spray and I cleaned out coop- completely emptied and sprayed with the spray recommended on here- I can’t remember the name. It was late by the time I got that done so they all stayed in crates in our garage because I needed it to dry and air out. 
Monday:I left Olive in his crate but we brought him out t be near the hens and out of the dark garage.  The hens were given a makeshift nesting box food and water and blocked from getting to the run and coop. I couldn’t do anything else until I was done teaching. Hens layer eggs but only 1 in the nesting box. 

 Ollie was given mash and water before we left. 
He ate only a little all day. Only a small poo all day 
 
When we got home we all cleaned out the run and I blew everything out after raking it out. We keep our coop and run really clean. We scoop poo daily except on Sundays or when we are on vacation. I dusted with that dust stuff recommended on here. I also put DE in there. Then put only 1 bag of shavings. I couldn’t put the roosts back in yet bc they weren’t sprayed until yesterday. I put Ollie in a small crate in the coop and all the hens in the coop. 
After they were in bed I finished the run. 
I sprinkled the dust stuff and the DE all over the run. Then added ash from our fireplace and sand. Very thin as we didn’t have a lot. Then I went to the store and bought liver and top soil. I spread a thin layer of topsoil ( ground in there is really hard) all over the run. I made a separate dust bath area using our fire pit bricks that had cracked and layered a generous amount of ash, sand, DE, mite dust stuff ( I’m sorry I can’t remember what that’s called) and topsoil. I am hoping it will dry out and then I’ll add more - a little at a time so it can dry out. I’ll make that as deep as I can over the next day or two as it dries. 
I am losing the roost brackets today before I put the roosts back in.  - they’re 18” high but I have 1 Favorolles with what looks like bumblefoot so I think that will help. I’ll deal with that bump after I get this run and coop completed. 
I am also adding herbs in their nesting boxes today that I just bought from 
Amazon. 
Here’s the help I need: how can I get Ollie to eat and drink more? 
Where can I buy herbs for the coop and nesting boxes- cheaper? Do they need to be dried? 
What else do I need to do? 
Liver info - thank you for the details. I will make and freeze and give him some each day until he recovers. 
Double sided tape idea!!! What a great idea!! I have that on my list to do today. 
Thank you all for your help!! 
Thank you for helping me get through this!!