Merry Christmas everyone

I would like to know what all of your thoughts on a possible issue I am having.
After getting a razor professionally honed. It is so very sharp and does a excellent job on the shave. After about a week I lose some of the sharpness. I am still getting a decent shave but it is not as sharp as it was before approximately seven days shaving. After that initial loss of sharpness I do not seem to lose anymore.
Is this normal or is my technique dulling the blade A little.

Thank you all very much

Roger