Maybe we could start with you describing your disconnect procedures.
When I disconnect, after the loader is physically free from the tractor, I shut it off, wiggle the control in all directions then disconnect the hydraulic lines starting with the top left, top right then lower left, lower right.
I lose "a little" meaning MAYBE a teaspoon or less each time, certainly not "a lot". Can you estimate what you call "a lot"?
Today when the John Deere driver dropped of my 1025Rl we put the loader on and off three times and just got a drop out each time. He used a paper towel and non Got on the floor. We shut the tractor then cycled the loader control several times to take the pressure off and just got a few drops in the paper towel.
One of the important things to do before disconnecting your wet lines after you have "parked your loader off from the tractor" is to rotate the loader joystick in all directions to take the pressure off the lines and sump back into the tractor as much as possible. Especially if you do it in cooler weather and then try and reattach it when it is warmer outside. You may have to resort to this if you can not re-connect the lines. Amazing how much pressure builds up in the loader lines, get a plastic baggie out and paper towels and a small hammer to pop the ball bearing to release the built up pressure to connect your lines back up.
I really only get a couple of drops out of my loader hydraulic connections during a disconnect and I rarely get any during a reconnect. The power beyond (for the backhoe) is a different story. I'll usually get a half teaspoon worth of hydraulic fluid that will spill out when I'm swapping the connection.
The only time it concerns me is when I'm out of paper towels and don't have a rag handy.
My loader is doing the same thing on my 1025r. My dealer is coming out next to put on new quick disconnects the male ends to see if that corrects the problems. Its like the ball value does not fully close once the hose is disconnected.