Airway clearance not working?

Hi community,
Since I frequently have flare ups, I have to examine my airway clearance techniques to see if I am doing them right.
The following is what I do twice a day these days:
1. inhale levalbuterol + 7% saline;
2. autogenic drainage, lying down with my right side up, since my problem is the upper right lobe, then huff cough;
3. aerobika, first lying down, then sitting up, then huff cough;
When inhaling saline, it makes me cough a lot. It seems I get more mucus out while inhaling saline.
Autogenic drainage, aerobika and huff coughing help me to get a little mucus out, but never a lot.
Sometimes, not long after I finish the clearance, I start coughing and the cough will get more mucus out.
Question:
Is it normal that autogenic drainage and aerobika and huff coughing do not get much mucus out, but afterwards the coughing would get more out? If I don't cough, that means I did not clean out my mucus completely, right?
Please share your experience with me. You are the people who can help me. I feel desperate. I hope I made myself clear.
Many thanks!
Ling