This is a terrible advice. If you have a problem please see a doctor, do not try squashing it with caffeine. If CPAP is not working ask about other treatments -

This is a terrible advice. If you have a problem please see a doctor, do not try squashing it with caffeine. If CPAP is not working ask about other treatments - dental appliances, various surgeries, ask the doctor. Weight loss is the only sensible advice from the above post, however losing weight is impossibly hard when you're low on oxygen. Start breahing first, then lose weight.