If a pair of pants with an adjustable waist are still too wide, taking in the already adjustable waist is a great way to fix this problem!
Muumade - Taking in the Already Adjustable Waist of Children's Pants
DIY adjustable waist toddler pants - Peanut Mom
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Muumade - Taking in the Already Adjustable Waist of Children's Pants
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DIY adjustable waist toddler pants - Peanut Mom
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DIY adjustable waist toddler pants - Peanut Mom
Adjustable Waist Baby Jeans