The only one I know of is the Bosom Beauty 2012 Breast Enhancer Enlargement Machine.... not as good or as expensive as a Brava but I thought it will control the air good enough so you can sleep.
What I do is get domes and put a short air hose with a valve on it and put them on, evacuate the air, shut the valve and go to sleep. Home made domes without air inlets work great and stay pressurized all night. also Amazon used to sell Kangzhu domes with air locks built in. Same principle. way less complicated than automated electric... imho...