March 2019 baby suddenly getting an imagination

Does anyone else noticed their March 19 toddler is suddenly getting a huge imagination? My daughter has all of a sudden started to do more pretending over the last couple of weeks. She loves watching peppa pig, and literally all day she is pretending that she is peppa and jumping in puddles with George. She’s constantly doing little pretend things, and brings me imaginary things all the time. Her sleep has been totally messed up for the last month and I wonder if this developmental stage is part of the reason.