I think the only time you should inform them or ask a permission if it’s something they are paying for. Otherwise let them be disappointed. They’ll get over it.

Well now I think it depends if they have expertise on something you don’t. Actually one of my stepkids does ask for specific opinions quite a bit.

Her dad medical and mine educational because she trusts our opinions and because she made some very very bad choices in the past that will follow her for the rest of her life so she tries to ask what people think first. Sometimes she listens and sometimes she doesn’t. But that’s a different situation I believe from what you described. “Dad I quit my meds cold turkey for no reason and now am very sick, should I see my doctor, go to ER or restart my meds or just keep being sick?”

Are you talking about extremes like this or “mom and dad should I buy new shoes”?