I have been trying to get my girth up and recently have been making very quick increases. Some one on here posted a way to do it so I decided to try it. Basically get about 80% erect and hold the base tightly and get the head so it is as big as you can get it. Then still holding the base, slowly squeeze the head "use with caution I got bruising the first time I did it" but squeeze the head all the way till it is small and all the blood from the head goes into the shaft. Takes me about 5 seconds to do this, then I release and kegel a couple times and do it again. Once you do this for a couple days it becomes easier.