my son is 6.5 months old and just did the same thing to us!!! But it was worse, he was getting up every 45 min to 1.5 hrs all night long!!! I'm still not sure if it was teething, a developmental step (more aware or something) or maybe even separation anxiety...what we did was continue with his normal routine during the day and get him back to sleep at night the usual way (patting him, holding his hands etc), although I have to admit I did rock him one night because he was soooo upset...and a dose of Tylenol at bedtime. Not sure what did it, but it lasted 4 nights and now he's back to sleeping 10-11 hrs staight thru.
Ive read that this happens to some babies around developmental milestones and seperation anxiety, but I'm still wondering if there are some teeth under the gumline causing pain, cause the Tylenol sure seemed to help!
Be careful not to set up a pattern with the eating during the night or rocking; ive heard they can come to expect it and then the night waking will continue.
Hang in there!!! It stinks, I know!!!
By the way, if you're having trouble getting him to fall asleep in his crib, but don't want to let him cry it out, try "the baby whisperer" books. There is a technique called pick up/ put down that worked like a dream for my son. We rarely have to pick him up now to get him to sleep or back to sleep once he has awakened since using this technique. There is some crying, but at least you don't have to leave him by himself crying...I know it works for some babies, but I just couldn't handle it!