supplemental oxygen issues



Hello. I have recently been prescribed O2 for sleeping and exercise and have been having some issues.
1. I can never keep the canula in at night and end up waking up several times to replace it. Any suggestions?
2. I find working out with O2 awkward to say the least but was wondering how folks regulate their O2 flow and their O2 sats. I have been trying to get my heart rate to a work out level, (140-160) without my sats going below 85% but am having trouble getting this combo. What are other folks doing? I monitor sats with a finger pulse oximeter.
Thanks for your help!
43 yo female with CF
fev1 glass half full