What is the best way to get more watery CM?

Help, I produce very little lubercation and it's hard for me to get juiced up down there before sex.  I still produce egg whites and cream filling but I lack the waterfall effect.  
I use artificial lubercant Astro Glide but would like to naturally have more lubercation.  Does anyone have any suggestions that could help me other than watching porn and longer foreplay?