how did it go? any tips?

LO is 19.5 months and has climbed out of crib 5 times now, within minutes of me leaving the room. Soooo last night I put her on floor mattress and laid next to her and she went to sleep pretty quickly, and woke around 6:15am- I was shocked! BUT, I really don't want to make it a habit of sleeping next to her until she falls asleep either.