I play soprano and whilst playing through vivaldi and a long list of very fast oboe exercises I tend to find a large buildup of saliva in my mouth is a huge problem. It does not get blown through into the sax though it just stays in my mouth this means I do not have the crackling saliva sound problem but instead I have a problem with being able to keep a consistent stream of air going into the saxophone and also it is very hard to breathe in. I would usually swallow it but in this music there are minimal rests meaning I need them to breathe. I practice regularly (everyday) and have been having this problem for a long time. Any tips?