I have completed this in
CYPW Diploma level 3. It sounds the same as yours. I created a table with 'aspects of development' down one side (the five aspects) then along the top the ages and in each area a brief axplanation of the 'expected' development for the relevant age and aspect of development. For example: Cognitive for 6 months may be that they explore toys with their fingers and mouth. It took a very long time to complete as obviously 0-19 and five aspects of development is a lot of research!
Good luck I hope I haven't confused you further.