L.B.
wow, mine is 20 months and doing the same thing. Now he just talks to himself but he was (about 2-3 months ago) crying ect. I would put him down and he'd go into the kitchen, open the pantry and pull out crackers or some snack. He was eating great during the day too so I just assumed he was growing. This went on for days and I have another child so I wanted my sleep (maybe selfish?) but I started putting 1-2 books that he loved in his bed with him. He has a fish thing on the crib to provide light so he'd just look/'read' his books for a while then go back to sleep. Then after a couple of weeks it stopped. Now he wakes up and just talks to himself. He doesn't have his books anymore and the fish thing needs new batteries so it has been great to teach him to self soothe himself back to sleep. Anyway, good luck and remember that it will pass!