@Rosieposie101
It's not at all like Sophie! Sophie has been commonly used in the UK since the 18th century. It's now well-known to the point of dull and considered a British classic in it's own right. The differences between the original pronunciation and the British pronunciation are also tiny.
Ottilie went from basically unheard of in the UK a few years ago, to suddenly extremely trendy. Therefore it will date very badly and seem very naff in a few years. Yes, all names date. But names that go from 0 to painfully trendy overnight date badly. It's why we don't cringe when we hear Elizabeths and Annas, but a Donna or a Jayden seem far less nice or classy a few years later.
The pronunciation is not just slightly different, like with Sophie, either. It's very different and embarrassingly wrong. It's not even the right amount of syllables, and every syllable except the first 'Ot' sound is wrong. It's not a change that's emerged slowly over time due to changes in language. It's literally people who don't know much about jow names are pronounced in different places made an attempt to say it based on it's spelling and got it very wrong. It's a mistake, whereas Sophie isn't.
But like I said, you clearly like the name to the point of not wanting to hear other people's opinions so to be honest I think you should use it. I once posted a thread on here about a name (under a different username) and people didn't like it and were mostly negative, like on this thread. My reaction to their comments (defensive like you are being) made me realise it was the right name to ise for my next baby because I loved it so much I didn't cwre what any of these people thought and I disagreed with them anyway.
So go for it.
I'm sorry, but it's not that I don't respect people's opinion, it's that you don't want to understand the difference between a modern and newly invented name and a classic (even if it was previously an underused classic).
Jayden was most likely invented by putting a J in front of Aidan and then changing the spelling (yes there is a Biblical Jadon but the pronunciation is different (for most people) and even though some people might have used this as an inspiration it is not likely and it uses the trendy spelling). They are just not the same kind of name. Ottilie is retro, old fashioned and Jayden (at least spelled and pronounced like this) was completely new and modern at the time.
I don't care about Ottilie dating it is just the fact that you don't see the difference between Ottilie and truly modern names like Khaleesi or Royaltee. It is genuinely odd to me.
It will date but it won't date very badly even though you keep insisting on it. It will date like Ava which also came out of nowhere but was used in the 1800s before (just like Ottilie was).
Sophie sounds very different in French actually (unless the change their pronunciation to the English one for making it easier), I know several. The emphasis is not on the first syllable, the O is not nearly as prominent. It sounds even more different in German where the S is pronounced like a Z and it sounds like zo-FEE.
Another example is Ava. It is an old name but had a similar rise to Ottilie, after hardly being used for decades and having been used in the 1800s and early 1900s but not heavily.
It is AY-va in English but AH-va in German. Eva is EE-va in English but EH-fa in German (sounds quite different because the V is also an F sound). Rachel is RAY-chel in English but ra-SHEL in French. Katharine is KATH-rin (or KATH-eh-rin sometimes) in English and kah-tah-REE-neh in German.
If they are still not different enough for you how about Caroline? It's KAIR-o-line in English and kah-roh-LEE-neh in German. Charlotte is SHAHR-let in English and shahr-LOT-teh in German. Do you see how the number of syllables changed? They are still not mispronounced.
I explained it before but Ottilie has three syllables ot-TEEL-yeh in most German accents only when you pronounce it very carefully does it become ot-TEEL-ee-eh but in daily life hardly anyone would say it like that just like in England hardly anyone would say KATH-eh-rinn for Katherine but KATH-rin.