To be clear, the drive cycle is designed to allow you to immediately test the car as quickly as possible.

Each segment of the drive cycle does not have to be connected, and you can do it separately.

It's also really important to have an OBD scanner to show you *which* I/M monitors are not ready.

Do NOT use cruise control. CC can use too large throttle inputs. It's better to let the speed drop than use more throttle.

I've found that setting the readiness monitors is very hard for people who have an abrupt driving style. My wife is never able to drive cycle her 993TT (notoriously difficult emissions cars), but I can do it consistently.

I have also found that driving at the LOWER end of the speed range works better for me.

All that said, if you can't set the readiness monitors with 3,000 miles of driving, you need to consider whether or not you have an issue that's preventing that. Knowing what monitors aren't setting would help.

Edit: I'm sorry, I missed the monitor readout earlier. Have you considered replacing the O2 sensors?

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2011 M3
2006 Sierra 2500HD 4WD LBZ/Allison
2004 X5 3.0i 6MT
1995 M3 S50B32
1990 325is
1989 M3 S54B32

Hers:
1989 325iX
1996 911 Turbo