I've recently been blessed as Catechumen to the Orthodoxy faith. I used to be a Roman Catholic, but I was never too devout. I was a "Sunday Catholic" so to speak. I don't want to be this way with Orthodoxy. Besides attending Divine Liturgy and praying at least twice a day, how can I make Orthodoxy something I don't "take off" every Sunday with my church clothes?
You've gotten a lot of good advice, particularly about the danger of burning out from taking on too much too soon. Be careful of that: enthusiasm is a good thing, but it can also be a bad thing.
In terms of "every day", here are my recommendations, which largely coincide with everyone else's:
1. Daily prayer, preferably morning and evening, but at least once a day; if you haven't already consulted your priest about the basics, please do, and try your best to follow his advice. Also, some short prayers throughout the day when you have a free moment, to bring your mind and heart back to God. It need not be any longer than "Lord, have mercy". Sometimes, if it's a bad day, I just look up and groan.
2. Daily reading from Scripture. The daily readings (which I'm sure can be found on the Antiochian Archdiocese website, perhaps on your parish's website, a parish calendar, or any number of other places) are a good place to start if you don't have a regular reading habit--they shouldn't take more than five or ten minutes to read on any given day. Perhaps you could pick a line or two that jump out at you and think about them a bit right then and there or during your day.
3. Try to remember the Wednesday and Friday fasts, to observe them: ask your priest about the best way to start. They are only two days, but somehow their effect spills over into the rest of the week.
4. If your parish has more services than the Sunday Liturgy, try to go to them as you can; in general, try to be an active member of your parish.
5. Don't take the Orthodox internet too seriously.
If you can do that, that's plenty to start with. But if you can't do all of it, start where you can and grow into it. It shouldn't be too easy, but it shouldn't be an oppressive burden either.