alright i hope he is a little better tomorrow! Also hopefully someone who is more experienced will find this thread because i dont think i can really offer any good advice.
also here is some information for mycoplasma. it mentions some of the symptoms, so maybe you can see if they seem similar to your turkey's symptoms. https://www.maine.gov/dacf/ahw/animal_health/documents/backyardpoultry/Mycoplasma%20Factsheet.pdf
How old is the turkey? I don't know much about turkeys but when i looked it up it could be Mycoplasma infection which can be transmitted through mating. It causes swollen joints, lameness, and possibly respiratory diseases.