My 14 Month Old Son Wont sleep through the night?

We are having the same issue! Our son doesn't have a set time he goes to bed at night b/c it depends on if he napped 1 or 2x and for how long but I know the feeling of getting up 2 to 4x a night. He still manages to be up between 6 and 7:30a. It's exhausting and I can't imagine being pregnant and doing it. I'm going to take other peoples advice and start putting water in a bottle and leaving it in his crib to see what happens. The longest we've let him cry was 15 minutes and we still had to go in and rock him back to sleep. It's hard when he started sleeping through the night at 10 months and then started this waking up thing again around 12 1/2 months. He will be 14 months in a few days. Good Luck! I hope we can get our boys sleeping and minimize the amount of bottles!