we played w a couple sat night, want to see them again — how soon is too soon to follow up and how slow is ghosting

spinning on this and would love a sanity check from ppl whove navigated it. so we had a really nice night w couple K saturday. dinner first, drinks at the club, ended up in a cabana, very mutual, very warm afterwards, exchanged sig usernames in the lobby on the way out. we're into them. they seemed into us. its tuesday and i have not written anything yet and im weirdly stuck on the timing. f36 he 41, lifestyle 3 yrs, weve had this exact scenario play out maybe 4 times before and i still dont have a rule. sometimes ive written wed and it landed great. sometimes ive written sun morning and it landed too eager. sometimes ive waited til the next saturday bc i didnt want to seem thirsty and it landed too late and the connection had faded. is there an actual sweet spot. is it "wait 48 hrs always" or is it "match the energy of the night" or is it "first one to break the silence wins as long as its before friday" — like ive heard all of these and they cant all be right. and does the content of the first follow up matter more than the timing. is "had such a great night" too on the nose. is "hey what r u guys up to this weekend" too far the other way. also btw what does it mean if THEY write first. like if its tomorrow does that mean theyre desperate or just decisive. and if they write next friday is that ghosting recovery or is it normal slow burn. i need to recalibrate my read on this whole timeline thing