Feeding Yellow Goby while away for two weeks?

[flyingscampi]

I have one fish, a Yellow Goby, who gets fed with frozen shrimp once a day, and also eat pods when he can still find them (the rocks used to be crawling with them.) During my two week holiday, a family member was going to housesit and feed the goby, however this arrangement has fallen through and I'm considering my options.

How long could I leave between feedings without causing harm?

Are there any other suggestions, e.g. buy a load of amphipods and dump them in the tank before I go?

 

[flyingscampi]

This is a duplicate post, please ignore!