Hi T. -
I know it can be frustrating, but many 2-month olds are not yet ready/capable to be on a schedule...you hit it right on the head, they have a schedule of their own!
I only have one, so I cannot address the difficulty of #2, though I have a difficult #1, so I can only imagine..LOL! Of course there are things you can do to promote a schedule, but as you had mentioned that will largely be determined by your particular child. I would start by trying to get intune with your babies cues and go from there. It can be hard to do with an 8 week old though. My son was tough to get on schedule and believe me, I tried! I don't think he settled into a schedule until he was 5-6 months and still, some days that doesn't even happen! Again, it isn't because I don't have a schedule or try to stick to it, just some days he eats/sleeps a lot less and I can't make him eat/sleep more!
With time, a more predictable schedule is sure to emerge. Good luck.