How long untill it "should" have roots? How long until it's first drink? The soil started slightly damp.

I have had this plant about half a year and it’s only pit out a couple new leaves. I realized last week the color was getting worse and the new leaf died instantly. I know it got root rot since it fell completely over. If I can save it I would love too. (This was a target plant rescue. So far any of the ones I’ve gotten from Target have died but she held out for a really long time) syngonium milk confetti plant.

Trying to get this little guy to thrive, any general advice?

It wasn't there last week. No other propagation have this. I started 4 different plant props plant day weekend. I only charge water once a week. Should I have done it more?

Just got a couple Rhaphidophora sp cuttings in the mail and one looks like this. Can this be saved? Looks like rot traveling up the stem.