Are very rapid growth lung nodules related to emphysema?

I've had copd since 2001 and it's reached well into stage 3. About 3 years ago a routine ct scan showed 3 small lung nodules and subsequent scans have identified more nodules every time. They now appear in every lobe of both lungs, some with spiculated margins and having very rapid growth. None of them have reached tumor or mass size but there are nodules that are now 2 cm. My pulmonologist has discouraged me from any type of biopsies as I am at high risk of pneumothrax and the targets are small. He states that PET CT scans would be useless as he believes them to be inflammatory in Nature. Sputum cultures revealed some fungal growth and he dismissed these results as laboratory contamination. My last consultation with him over the phone he said we had been looking a little too closely at these nodules and would back off from such frequent imaging. I have an appointment for the end of August but no further imaging has been ordered.
My emphysema is progressing and I am able to do less and less all the time. I feel like he has just given up on me.
The nodules are still undiagnosed. Has anyone been in a similar situation? What more can I do? I have started Mullein tincture but it's just a hail mary.