Luke, couple of questions to start...
Those boots are wide for wide feet. Do you have wide feet? Does the boot give you a very snug fit without discomfort? Do movements of your legs translate through the boots to movements of your skis, or is leg movement used up with a sloppy fit inside the boots? If the boots aren't snug, there is little that can be done. A shim under the foot might help; otherwise these are the wrong boots for your feet.
What about those skis? Which model and what size? The stiffness of the ski is what really matters, and that relates to the model and the size--they get proportionally stiffer as they're made longer. If the skis are too stiff for you at this stage, they really hurt your learning.
Now about the skiing...man, I hate the advice to make the wedge christie turns or sliding wedge turns. (Question for others...is a wedge christie turn a skill to be learned or a bad habit to break?) Many new skiers progress from wedge turns to parallel turns by using the wedge christie and progressing through it without every doing one intentionally. Do not let it become a habit...it is a tough bad habit to break.
What to do?...balance is everything. You need to be mainly balanced on the ball of your foot on the outside of the turn. The left foot on a right turn, etc. Don't talk about uphill or downhill sides, talk about inside or outside. Almost every physical activity depends on being on the balls of your feet, and skiing is included. Here's a rule for everyone---challenge yourself on either terrain or technique, but not both at the same time. Go to some very easy terrain and practice the stance on the balls of your feet. Stand tall, slight flex in the knees, very slight flex in the waist, weight mainly on the balls of your feet, and hinge forward at your ankles. You want to be on the balls of your feet leaning lightly against the fronts of your boots. Don't squat to make the boot tongue contact, hinge forward at your ankles. Keep your feet walking-distance apart, no wider. (Wider stance gives stability and costs balance, kind'a like training wheels on a bicycle. We don't want training wheels.) Ski straight like this, flexing a small bit at your knees and waist if you go over ridges in the snow or small bumps. Now, twist your upper body a bit to the left and flex a small bit at the waist so your zipper tab is over your left toe binding. Stand on your left ball of your foot. Smoothly turn both feet to the right at the same time--do not kick your heels out. You've made a smooth right turn. It is that easy. Stop. Go straight, then make another smooth right turn using the same movements. We aren't doing anything extreme. We aren't bending over at the waist, just a bit of flexibility. Go straight again, then make a smooth left turn by standing on your right ball of the foot and moving your zipper tab over your right toe binding. Repeat, repeat, repeat on this easy terrain. It takes several hundred repetitions of a movement to make it automatic, which is actually forming new neural connections in the brain.
For a drill, ski straight with the tail of one ski lifted an inch or two off the snow. Keep the tip of that ski on the snow (lifting the whole ski off the snow puts many back on their heels). Ski with one ski lifted as far as you can, then switch feet and lift the other. You're on the ball of your foot all the time. Change the drill so you keep the lightened ski on the snow, but lift the ski a millimeter, no more. Change the drill so you have the ski tail lifted that inch or two, your zipper tab over the other toe binding, then roll the lifted ankle to raise that big toe way up. You're skiing on your ball of your left foot, zipper tab over the left toe binding, right ski tail lifted, right ankle rolled to raise the right big toe way up. You're now making a very smooth, very easy right turn. Roll the right to turn right. Repeat, repeat, repeat. Do the left. Do them again with the inside ski just lightened, not lifted.
Don't worry about edging. It'll come. It has to be smooth, and it is a real problem if you're heavy on the inside ski. If you roll the ankle of the inside foot so the big toe is raised, and you balance over the other foot, you're edging the skis without trying. Just balance, and you're good.