These are two things that I did that really seemed to decease the CAs.
First, I have allergies but hate (empathize hate) full face masks. So I use a nasal mask. Some nights the allergies made it difficult to use the nasal mask and on these nights my CAs increased. I invested in a Navage and it has done wonders in keeping me clear. I noticed that sleeping on my side decreased my CAs, but I really like sleeping on my back! So I have tried to make sleeping on my side more comfortable. I invested in a knee pillow and a huggable pillow. The first night I could only get 4 hours total on my side, but now I am us to 6.5. hours with no CAs.
I still have some hypopneas, (1 per hour) but they never last longer than 10 sec.
I have received much support from this forum - I hope that this helps someone.