Resized t-shirt

I didn't take a before picture, but this shirt used to be larger. I used Jalie pattern 2918 to resize it to a toddler size 2. I have had to adjust the neck size from the pattern. As is, the shirts do not fit over my toddler's head. I have to make the opening 1/8" - 1/4" larger to fit over his head and have had to adjust the neck binding as well.