Levoxyl and milk

I just began taking the lowest dosage of Levoxyl. I take it first thing each morning with plenty of water and wait 4+ hours before taking my vitamin supplements. I drink soy milk and usually have some with breakfast each morning about 1-2 hours after taking Levoxyl. I have just read that soy may interfere with absorption. Question 1: Must I give up soy products altogether? Question 2: Can I drink milk with breakfast or does the calcium in the milk interfere with the uptake of Levoxyl?