Small or medium hoppers

[Arlosand]

Hi can anyone tell me if my baby should be on next size up from small yet, he is nearly 3 months, I have ordered some but some hoppers seem to look huge, but when I order small they seem to look too small.

 

[Sadie]

Hi can anyone tell me if my baby should be on next size up from small yet, he is nearly 3 months, I have ordered some but some hoppers seem to look huge, but when I order small they seem to look too small.

Insects should be no bigger than the space between his eyes-