Change baby’s ‘nickname’ name to its longer form

Two of my kids have a nickname as their official name. Both would be fine as adults. I suppose the annoying thing is occasionally being asked 'is that short for X', and my daughter was once caught out as a new teacher called her by the longer name and she didn't respond at all and he though she was just ignoring him.
I do think there are some names that don't work for adults: Billy or Jimmy might not work for a lawyer, whereas William and James sounds more grown up for sure.

This is the same as me 😭 I worry that I've failed him by giving him a name that's not 'a full name' even though it's actually quite a popular name (which is something else I worry about) so it's not like it's hated by everyone.

I look at random men in the street and wonder 'would they suit this name'. It drives me crazy. But like you, I think it's more anxiety than anything.

I also shorten his name, so for example if he was teddy I call him Ted so then I worry more than I should have gave him the 'proper' name because I feel like I've gave him the 'nickname' and don't even use it. I'm hoping the responses in this thread make me feel better 🤣

I don't like nickname names but they'll be nothing worth mentioning when he's an adult as there will be loads of them.

Teddy is too baby-ish... but Alfie is ok. It depends. Think about your son introducing himself as a doctor/lawyer/professor/olympic champion/at the dentist......

But my first instinct is don't change, especially if you don't really like the full name

It isn't a nickname though is it, it is his actual name. What you are referring to is the shortened version of a name and then having a longer one on the birth certificate ie Elizabeth and Beth. Honestly just keep his name as his name. I know children who have a "Sunday" name on their birth certificate that they are never called. Then all the forms that are filled out for school etc have Name and then known as. Just keep it simple, his current name is his name.

Oh OP I think about this every day!!!

My baby has a 'nickname' and it never caused me concern until I started reading baby name threads on here. Now I'm worried he'll grow up and think I've given him a 'child's' name and not an adults name. My partner says I'm ridiculous and that it's fine.

Keep it. He can change it later by deed poll.

Having said that both my DDs have been called by the shortened version since birth but have the long version on birth certificate. Both have said they are grateful for having the choice of which one they want.