I feel like I pressure my girlfriend in to having sex a lot how could I stop myself from wanting it so much but to still have sex

It is something called self control... and I would not worry too much about it with your girlfriend because as soon as she becomes your wife you will not have the worry. She will let you know when you are going to have sex.

If your girlfriend doesn't want to have sex she will tell you.
If you think you are pressuring stop take a step back and think am I forcing her to have sex that is rape.

So think before you act.

Well it is about age and also how often you get it
Inyears that will change it will be once a night once a day once a month maybe more..