My 8 month old son has been sleeping throughout the night for a couple of months now without problem. However, over the past month, we've been having a problem with diaper leakage overnight.
We switched to extra-absorbent overnight diapers, and they help, but we find that if he rolls over onto his belly, the diapers still leak. My son is at the bottom end of the weight range for the diapers (he's 23 lbs, and the diaper is for 22lb.-35lb. babies), so it isn't a matter of the diaper being too big.
Since my son is rapidly becoming more mobile, it is now very common for him to wind up in a completely different position from where we leave him (usually upside down and perpendicular!). Unfortunately, this seems to have resulted in him soaking through his diaper more. Due to a local heat wave, we've been having the air conditioner run, however he invariably kicks the blankets off during the night. For the past few nights he has started whimpering in his sleep around 2am, and when I check on him, I find that it is because he is cold and soaked. Fortunately he hasn't had too much trouble falling back to sleep after he is changed, but clearly we'd like to avoid this situation.
We have been feeding him a bottle right before bed, as he is always hungry by bed time. At one point we had been giving him a larger-than-normal bottle (8oz.) in an effort to help him sleep through the night, but that made the peeing problem worse, and he doesn't wake up urgently hungry anymore, so we've switched back to his normal feeding (6oz.). This, plus the overnight diaper, was working well up until he started rolling over during the course of the night.
Any suggestions on how to eliminate the problem of him winding up soaking wet in the middle of the night?