Sewing doll things is a lot of fun. I made several things for my GD the Christmas before her little brother came.
Here is the diaper pattern I used - made one out of paper until I got it to fit
https://www.skiptomylou.org/how-to-m...a-childs-doll/
here is a super easy top for 2 yr olds. It has elastic instead of snaps or buttons for the top so it is easy for them to change their clothes
http://wewilsons.blogspot.com/2011/0...uper-easy.html
I just used a baby bib to "wing" a pattern for a doll bib and used velcro on the tabs.
Have fun!