Great Job!Staying on top of things is the ONLY way to go. Stepping up the treatments is a great idea. Our daughter usually has the asthma component of CF increase during colds. Asthma attacks increase mucus in the lungs and airways which makes things worse. So increasing breathing treatments will help surpress asthma or reactive airways.Next.. I would do everything possible to keep the upper respiratory area clean and clear. Bulb syringe her nose often to get the gook out. Saline (Ocean spray) will reduce membrane swelling and loosen mucus in the nasal area. We usually give Madison a squirt and immediately suction it out. ENT SOL is a product that has hypertonic saline. It burns me like heck (most dont complain) but it is GREAT! The nose membranes shrink, the mucus goes away. It provides 3 hours of solid relief from the worst colds. Keep you child hydrated and watch for fever symptoms. Occasionally the mucus backs into the ears and causes an ear infection, so be on guard for that. Yellow mucus and sometimes light green can be viral but it is usually bacterial, so watch that too.Alot to do huh? You will do fine! Best wishes.Don Patin