The term 'dotage' is not commonly used in modern language and may sound outdated. You sound like a character from an old novel speaking of dotage.
Pro Tip 2/3
Negative Connotation
'Dotage' often implies a negative view of elderly weakness, so use it with sensitivity. Describing someone as in their dotage can be considered disrespectful.
Pro Tip 3/3
Cultural Sensitivity
Different cultures view aging differently; 'dotage' may have various interpretations. In some cultures, the concept of dotage as weakness is not recognized.