This may call for a slightly deeper understanding of how things work. DD is what you can get away with whenever input and output voltages are close enough to settle down into a… … now where did I already go on about all that? hmmm… . .
OK, take a look at my posts in this thread (Note that I made a typo as Bright_Mike points out, this has now been struck through. Focus on posts #9 through 23): Basic Driver Questions
Also take a look at my posts in this thread (Note that DD ‘drivers’ are NOT part of the discussion. Later in the thread when I say “LED drivers are all constant current” what I really mean is that generally nobody is selling Constant Voltage LED drivers. Focus on posts #7 through 18.): How many amps can a flashlight pull ?
Report back on your findings of course.
Can you link to whatever you are looking at with me & wiring? I’m sure I have plenty of difficulties, but I don’t remember whatever you are referring to. (24AWG can be OK for 6A, depending on other factors. You’ll probably have a better handle on it after scrutinizing the graphs I refer to in those threads.)
Now, as to how you’d fit an AxxDD-SO8 driver… they are very small drivers. You’d just bypass the stock driver and put the new driver in the middle of the sandwich. No problem: PLENTY of space in there.