Moderate persistent asthma and phlegm. Comments?

Six months ago I developed a chronic productive cough with SOB. This was highly distressing and when coupled with anxiety, made for quite a miserable cocktail. I experienced regular anxiety/panic attacks with dizziness and could barely make it through the grocery store. What made this even worse was that because these were also Covid symptoms, my GP would not see me in person (video visits only). So without a real examination, this largely went undiagnosed for another 60 horrible days. Then about a month ago a highly regarded Pulmonologist diagnosed me with Moderate Persistent Adult Onset Asthma (I am 57). My mother was diagnosed with asthma when she was 46. He has me on Symbicort and Singulair and this combination has seemingly worked well for me so far; cough is largely gone (I still cough a bit in the mornings, always have), I can take unobstructed, rewarding full breaths again, my energy level is up. I’m exercising and generally feel more like myself. Additionally, my spirometry results (lung function) have improved significantly, my oxygen level consistently hovers around 97, two chest x-rays have been clean, and the Pulmonologist says my lungs sound clear and healthy. But here’s what I’m struggling with now - Thick Phlegm without cough. The phlegm seems to accumulate gradually in my upper lungs and in the back of my throat. The volume isn’t huge, but very annoying. The phlegm is generally clear (light pale at times) and quite thick and sticky. And because my cough is pretty much gone, I have to “huff” this stuff up routinely and swallow (the sound is driving my supportive spouse crazy). I can force myself to cough, and this helps too. The phlegm waxes and wanes (some days are better than others). I don’t have allergies and don’t think this is allergy related. Mucinex also helps me get this stuff up. I’ve come so far in the last 45-days, with this being the last remaining significant symptom. Does anyone have any suggestions, comments, recommendations, or similar experience?