Getting Toddler into a 'big boy bed'

Tiffani • 25, Married, Mama to Jackson 2/21/16, due with Jude 3/5/18 💙

Please help me! My son will be 2 in just a few days and we're trying to get him into his big boy bed. Right now we're just working on nap time, but he will NOT stay in it! I'm seriously up putting him back in probably 20-30 times EACH nap time! I'm going insane. We have a new baby coming in 3 weeks, and while he'll be in our room for a while he'll go into the crib once he's ready. I really wanted to be closer to having our toddler in his bed by now but I'm just lost to what I can do. I've tried everything I can think of, what did you do?!