This design as written, uses about 3/4 of the skein, 200 g, 780 y, for the front / back / hood (no sleeves).

Super cute and well written.
Elected to make into a pullover:
slightly shaped arm openings.
side seams.
sleeves with a shallow sleeve cap for drop shoulder.

Size 2 fitted 4 yr old nicely.
Made the main sections longer (17”) than the pattern directed (15 1/2”).
I made the hood ~ 1” more in ht (11”) than the pattern directed (10”). It’s good as is, but another inch in ht would have been better.

Torso: 9”
Armscye: 7”
Neck shaping: 1”
Total ht: 17”