WCIF big shoes for a toddler

Does anyone know where I can find extra wide shoes for a toddler in Taipei or online? My boy is two years old, but very big for his age and has to wear clothes for a six year old. His feet are as long as an average 3-4 year old, but he can’t wear most 3-4-year old’s shoes because they are still not wide enough or can’t fit the height of his feet. Shoes for older kids are too long, clown training. I guess we perhaps need a more European or US fit. Any suggestions would be most gratefully received. Thanks.