In all honesty I think my situation is more the exception than the rule. The male I'm talking about is unlike any I have ever owned or come across. I haven't figured out his pattern yet. In your situation, weaned vs small is pretty much a moot point if you are feeding FT.. The male I was referring to will only eat live. Don't stress out too much. He's 900 grams so he has some room to lose a few grams. I know you can't do the whole live thing legally which limits my advice unfortunately.. My go to is a live mouse for a hard faster. It has always done the trick for me.