Talk me into switching from ChatGPT

Currently pay for ChatGPT use it a lot. I find it great that it 'knows me' in the sense that it remembers/recalls chats and can draw from all of our previous chats. Great when working on projects or brainstorm etc

Now my understanding was to get the same thing feeling from Gemini that I would have to use it for a while, give it time and feed it information etc. (makes sense)

I also like the idea that it would be integrated with all of Workspace and NotebookLM access etc.

However I've read some stuff on Gemini that it doesn't have 'memory' quite like GPT and that each chat is kind of sandboxes from previous chats. Is that correct?