@narelled23 When you say 3 to 4 cups per day. I am curious if it is all pure mucus verses a bit of saliva and pure moisture/water from the lungs plus the mucus.
I know when I release all after huff coughing etc. and bring all up into the cup, a clear plastic solo cup, it has three layers. The top is foamy bubbly moisture, the second appears to be more clear liquid with mucus floating around in it that eventually settles to the bottom of the cup after leaving it sit for a good 8 or more hours so I know how much 'yellow' mucus I have brought up. I somewhat have to slowly swirl the cup to bring the mucus together to see it as I hold it up to the light. The amount of mucus compared to the other liquid/fluids in the cup is minimal.

Regarding the mucus. I have a feeling of a substance in my throat area, as I have mentioned in other posts before, goes on nearly all day long. I am nearly constantly clearing my throat. At this point I assume it is mucus that has been brought up to the trachea and stuck there unless I just keep on clearing it. I try hard to ignore it but that is hard to do.

I've been tested for allergies, post nasal drip and sinus problems in 2023/2024, all negative. Wonder if I need to do all that again with reading your post and Sue's post.
Barbara