I think it took me 4 years to learn how to 'read' a clock and 3 years to learn the months of the year.
Why did it take so long?
I was quite slow at getting the hang of things
Reading a clock and a calendar are very important skills, so I'm glad that you have figured them out.  There is no shame in learning at your own pace, even if it is slower than others, but you should ask for help whenever you are struggling.  Most people will be kind enough to help you learn.
It's fine. I'm having a slow month so that is a normal thing
I would just not worry about what everyone else thinks. It is okay to learn at your own pace as long as you eventually retain the information, who care how long it takes.