Sleep Disorders Support Group

Hello Sleep Disorder group. I have sleep apnea. Was diagnosed last year with moderate sleep apnea. Just started using the CPAP this year. It did great at first but then I started breathing out my mouth while using the nose mask lol I have a small head and face so masks tend to be too big for me. The petite nose mask was working but I started breathing through my mouth as I said haha I am currently using a liberty mirage I believe its called and the small is too big n they dont make a smaller size :/ My tube from my CPAP to my mask has a crack in it and cant get it replaced until January Any suggestions on what I might be able to use to seal it that is safe to breathe in and easy to take off so I can clean it weekly?