Protein question

Apologies if this has been answered before.

So I recently started taking soy protein supplements and have definitely noticed a difference. Question is, what's the right amount?

Currently I take one scoop before working out, and one after. I'm using the GNC brand which has like 22 grams per scoop. Should I take an additional scoop at night? What about days that I don't work out? I'm currently not taking any protein on these days (apart from food obviously).

Thanks!

How much protein are you getting from food, normally?

What is are body weight, goals, and workout like?

This information will help us guide you appropriately.

I'm about 125-130 lbs, 5'8, and trying to add muscle weight. I consume a good amount of protein from my diet; I have peanut butter with breakfast and lunch, have lentil soup every day for lunch, eat a lot of nuts, beans, and have some kind of protein with dinner (tofu, seitan, tempeh, etc). I have my workout posted in the online journals section, but I do a four day split of chest/ triceps, back/ biceps, shoulders, and legs. I jog for a mile before each workout and do twenty minutes of cardio (jogging to sprinting) three times a week. I put on 7 pounds of lean muscle recently (10 before I dropped the fat I added with it), and this was before I started taking protein. I also had to cut back on my calories a bit since I was getting a gut. The protein has definitely helped with adding lean muscle, so I'm just wondering if I should take more. I'd love to eventually weigh 140-150, though that might take awhile since I don't want to add fat first. Especially not until the fall anyway. I do look much bigger than I weigh fortunately, but I hate being so light. If I ever get to my desired weight range, I'll be enormous! haha. Not sure I'll be able to achieve it, but it's worth a shot.