From the manual:

How to Record a Quantized Loop:
1. Press the QUANTIZE button to turn on Quantize mode. Its corresponding LED will light up.
2. Turn the CLIX LEVEL knob up so that you will be able to hear the metronome Clix.
3. Press the NEW LOOP Button. The RECORD LED will blink rapidly.
4. At this point you will hear the metronome beating at the tempo set by the TEMPO Slider. You can adjust the
tempo by moving the tempo slider up or down. Up will give you a faster tempo; down will be a slower tempo.
5. Hit the RECORD button. The 2880 will not immediately begin recording but instead will give you a 4-Beat countin.
On the 5th beat, after the count-in, the 2880 will begin recording. This is beat 1 of the loop. Upon hitting the
RECORD button, the Clix metronome will reset to beat 1.
6. For a Mono recording, TRACK 1 LED will blink rapidly during the 4-Beat count-in. When making a Stereo
recording, both the TRACK 1 and 2 LEDs will blink rapidly during the 4-Beat counting.
7. Once the TRACK 1 LED goes solid, the 2880 is recording.
8. To stop recording, hit either the RECORD or PLAY buttons. Press RECORD or PLAY within the first 2 beats of the
current bar and the 2880 will truncate the loop length to the end of the previous bar. Press RECORD or PLAY
during the 3rd or 4th beats of the current bar and the 2880 will finish recording the current bar then stop
recording. For example if you want to record a 2 bar loop, you can press the PLAY button during the 3rd and
4th beat of the second bar or within the first 2 beats of the third bar. The QUANTIZE LED will blink rapidly until
it finishes recording the loop.

I don’t have a 2880, so I’m not sure. If it doesn’t say anything about automatic stopping or a two bar count in, then I don’t think you can do it.

Maybe a good solution would be two have 2 foot controller pedals, and a switchblade controlling which one you’re using. So you could have one near the drums and one near the mic stand. (I’d think you could use a switchblade, someone correct me if I’m wrong)

Of course that’d mean spending money .

Also possible to have a midi solution, which also means spending money.