Hey Cody! Welcome to the Nation!
Before I give you any advice on how to stop relapsing, I would suggest doing the following things just in case you still find it hard to stay off of porn:
- Getting rid of all saved images/videos of porn on your computer and other devices
- Using a web filter/blocker in order to prevent yourself from looking at porn (Examples include K9)
Now, in regards to helping you out from abstaining from masturbating, the first thing I would suggest is to get out of the house and get busy.
Although I'm not exactly sure, you could be masturbating on the weekends because of extra free time where you have nothing to do.
Getting busy with friends, going for a walk, exercising and working out, or even going for a drive can help you out with going against urges.
The second thing I would suggest doing is getting yourself educated about how to prevent your urges from taking you over.
Here are some guides made for NoFap that can help you out.
http://yourbrainonporn.com/how-succeed-nofap-definitive-guide-based-6-months-experience
http://www.nofapacademy.com/downloads/NoFap-Hacks.pdf
Also, remember that although you will get urges, you are entirely in control of them. I would suggest reading these guides as well as success stories on this website when you feel like you are about to relapse.
I would also get educated about rebooting, which is going to be a crucial process in getting rid of what seems to be your developing symptoms of PIED. I'm gonna link you some videos on rebooting and for quitting porn.
Rebooting (I would suggest watching multiple times regardless of how bored you are):
https://www.youtube.com/watch?v=wSF82AwSDiU <------- (Extremely important)
https://www.youtube.com/watch?v=z4yx4ouxGbQ
https://www.youtube.com/watch?v=I0dDLWGMhUo
Quitting Porn:
http://www.stopprocrastinatingapp.com/how-to-block-porn-websites/
http://www.artofmanliness.com/2014/10/09/how-to-quit-porn/ <---- (Helpful but there might be some pieces of inaccurate information)
I think the last piece of advice that I can give you for overcoming this problem is to start
now and make a conscious effort to ending it. This issue has been making your life horrible for 2 YEARS now. Don't let it take any more of your precious time. I would rather suffer from withdrawal than suffer from regret.