Sleep Training update... nights #5, 6, 7, 8

Night 4, 5 and 6 were awesome. He slept through the night and woke up anywhere between 4:45 a.m. to 6 a.m. Damn it... on night #7 he woke up at 1 a.m. screaming bloody murder. My first instinct was to NOT let him cry it out, so I fed him and he was happy until 4 a.m. Crap. Did I just ruin it by giving in at 1 a.m.? I think he caught me off guard. Here we go again. Night #8, he went to bed at about 6:30 (turns out I keep quoting that he goes to be at 6, when really that is when I give him his last bottle and he technically doesn't go to sleep until about 6:30 p.m.- I claim MOMMY BRAIN). This time he woke up at 2:55 a.m. I let him cry it out and that he did until 4 a.m. when I just fed him. Turns out he was wet too... not just a wet diaper, but his pj's and t-shirt were wet. Maybe THAT was part of the problem? I don't know but I feel like I'm screwed. Did I just teach him that if he cries for an hour he gets food? This time of night is so tricky b/c 4 a.m. is a reasonable time for him to want to eat... but 2:55 wasn't. Aggghhh... it's the gray line. I think what I REALLY need to do is get that kid to stay up later. Maybe what I will try is to let him sleep from like 5-6? Ugh... I don't know what to do.