There are alot of websites that tell you to stretch, like you i was looking for something, anything that could help me out. So i gave stretching a try for 1 month and no progress was made and if anything it became tighter which sounds crazy. Also, there is a complication that comes from stretching in which the foreskin will be pulled back over the head but then ill not go back over it, it gets stuck - if this happens it can stop the blood circulation in your head and the foreskin will swell up and this needs immediate operation to fix if i remember correctly.
I'd say consider a circumcision, but i won't tell you to get one since i have not had one myself. Yet.