Why did your doctor think you were taking too much? Do you have the results of any blood work that led him to that conclusion? Were you having hyper symptoms?
I think there was miscommunication. The drop from 175 mcg to "25 mcg every other day" is HUGE. Perhaps he meant for you to take 25 mcg less (150mcg) every other day and maintain the 175 mcg on the alternate days???
It's never good to assume that "no news is good news". You should always follow up on any tests (people do make mistakes, and lab reports do get blown into the wastebasket). In fact, it's a really good idea to make a habit of getting a copy of the lab report for yourself and maintaining your own history. Do you have any of your lab results? If so, please post with reference ranges as ranges vary lab to lab.
I certainly wouldn't follow those instructions until I verified that they were correct. That's a much too big change. You'll be hypo in two shakes.
He should have called you with your lab work....
Is it 175mg or mcg?
If it is mcg, then YES it is a huge drop so quickly...