How long do you spend on “private” moments?

Hi everyone, this might be a bit of an out there question but I am wondering how long you normally spend on the “intimate” or nsfw moments with your partner. I find that the chats where me and my partner get intimate last so much longer. Mostly because I am super careful with my wording. I do everything in my power to try and avoid refusals/not break any boundaries so it takes me absolutely ages to formulate a reply. Is there is a particular momentum you guys keep (sorry if this is super personal)? I have quite a bit of anxiety about accidentally saying something “out of line”(I think this is more of a personality reservation on my part) so I’m currently on a chat that’s ongoing for two days. It’s a super slow burn and I’m wondering if I just need to allow myself to let loose a bit at this point. Thank you in advance!