Sleep problem and solution

So, we took Giselle out of our bed and put her co-sleeper in her bassinet in the Pack 'n Play. Then I read that once she starts rolling over (which she is) she is too big for her co-sleeper. We took away the co-sleeper on Sunday night. However, that night she was up every two hours! Grrr. The second night was a little better, but still up way too much. I talked to a secretary at Tony's work and she suggested that it was probably time for her to be in her crib. Tony and I were going to wait until around April to move her, but maybe it was time after all. So, yesterday we took a trip to Babies 'R Us and bought a monitor. I put her to bed with a T-shirt that I had been wearing all day (read that it helps) and she slept from 6:15 to almost midnight! Then I fed her and she slept again until 4:30! Woohoo! At about 5:15 she woke up and Tony got her and brought her to bed where she fell asleep with him until 6:20 when we got up for work. What a little sleeper! Yea!!!