Now. My weight loss has sort of plateaued to roughly 1lb per week, which is slower than I'd like.
This is pretty typical, and is more or less what you should expect after cutting for a while. You're playing a game of patience now. It's tempting to modify what you're doing; to eat a little less, to push in a little more exercise, and hope to see faster results. What I would recommend is continuing with what you are currently doing, assuming you are being disciplined and not slacking (you'd know), and collect data on your progress for at least 4 weeks. If you truly are losing roughly 1 pound a week, and you are maintaining that rate;
you are doing exactly what you need to be doing right now, don't change a thing. Rapid loss of weight usually only indicates one thing: most of the weight being lost isn't fat; it's also muscle, water, glycogen etc.
Give yourself a perspective check on what 1lb of fat actually looks like. Here's a good video, first one from my google search:
http://www.youtube.com/watch?v=Ozt-V0PPJawI'm not going to go fabulous status, but I agree with what she's saying here.
Otherwise, if you collect data and it points to you not losing any more fat, then i'd say cut back
just very slightly (maybe 300 calories). Keep in mind that if you're getting good exercise that builds muscle, your "weightloss" may slow but your bodyfat may still decrease, as you lose fat and gain muscle. You could also add more exercise, but it can be difficult to recover when you're already at a deficit in calories.
currently consuming ~ 1 footlong artichoke sandwich per diem
I don't like this and would prefer that you eat a more varied diet, but I understand habits are hard to break. Please consider changing this though. At least throw some kale in that sandwich (hell, i don't know what you have in it, but I ate subway everyday for like a month and the thought of eating a sandwich everyday just freaks me out now).
Here's an infographic so I feel useful.
The 1g protein per lb bodyweight isn't necessary but it'll certainly help if you're trying to build muscle or just retain as much as possible. Protein is also very satiating, compared to carbohydrates.
Anyways, glad to hear you're still working on it. Keep it up.