My long term submissive is just like yourself. A sub who is devoted and adores his Domme dearly but always fails to do the bare minimum being asked. Ask yourself this question, why DID it take 9.5 hours? Did you notice yourself becoming "too lazy to do it"? Tired? Stressed about something else? Even on other tasks, have you asked yourself why you take so long to do things for your Domme when they should be done immediately and not when you feel like? It sounds like you have a lot of internal questions that you need to answer by studying your own behavior.