Cat had her spay done yesterday
Dh came home with some medicine for her from the vet when he bought her home
He said its a painkiller but I've got a sneaking feeling it's an antibiotic.
Can't go look at it at the moment because I've got a sleeping cat on me 
Anyway the instructions say give her 0.5ml once a day.
Which I've been doing.
Dh asked me today how much I have her and said 0.5. He went "What!! It should only be 0.3! The vet said 0.3! No wonder she's all sleepy and chilled out"
He didn't tell me 0.3 so I assumed the instructions on the box are right
So AIBU to follow the instructions and to keep following the instructions?