I will be going to Florida to visit my Mom on (November 1st - November 11th)who has just been diagnosed with bullous emphysema which is a lung disorder precancerous

Anyway Myself and my Daughter (prego) and her son, My grandson Dylan are taking the train from NY to Florida and we will be gone 11 days total.I will be leaving my Beautiful
betta Babies in my husbands care,my concern is he'll over feed them

At first I mentioned his taking care of them and he replied there cat toys right

He thought it was funny...Anyway I was thinking if he just feed them every other night the frozen Bloodworm,
brine shrimp,Daphna cubes divided by 8 they should be alright till I get home,As I'm sure he wouldn't do any water changes either

I do not really feel safe with the feeder cube as I have heard to many horror stories about them.How does this sound?Does anyone have any other suggestions?