Probably a good idea! OR .... ?
Amateur sand riders typically burn up clutches riding deep sand. Too much "slipping" of the clutch. They'll do this until they learn how to ride sand.

Chances are good you're riding too slow and constantly slipping the clutch in 1st gear. Which means short life for clutch plates ... and Springs too!

Solution? RIDE FASTER! Don't touch the clutch. Pick a gear and TWIST that throttle, get OUT OF 1st Gear and stay off that clutch! Your bike is not a 125cc Two Stroke Moto Crosser!

Use the torque, LOOK WELL OUT AHEAD and gas it!
Get moving fast and stay "On Top" of the sand.

Easier said than done of course, depending on the bike. But if you work at it ... you may get better. Should be good incentive to cut luggage weight down?

My DR650 is brilliant at this, easy to ride even loaded in DEEP SAND. Other bikes not so easy. Earlier XT600 were good in sand too, no idea about the much heavier XT660 Tenere.

I learned to "baby" my clutch decades ago riding clapped out Triumphs in the California Desert at age 14. (1960's) I learned well how to nurse a slipping clutch home and not overheat it or BLOW it. I never abuse my clutch.

One KEY POINT you are missing regards carrying spares: SPRINGS!
Once you've properly COOKED your clutch you may have also ruined the Springs. Take them out, measure spring length against a NEW spring! COOKED springs will be much shorter. Replace them.

Also ... OIL! Once you've burned the clutch you may have released a bunch of clutch debris/particles into your oil. Not good. So do an oil and filter change ASAP after "burning" the clutch. Particles can clog oil lines and cost you an engine. Serious.

Conclusion? If you are taking clutch plates, carry a set of springs along too!

My DR650 is now approaching 65,000 miles. (90K km.) Still on original clutch.
But before next longish trip I will do:
1. New clutch plates 2. New clutch springs 3. New Pressure Plate 4. New Clutch basket. 5. New Clutch cable.

My DR650 clutch is working perfectly but I'll do the switch just a preventative maintenance.

No spares taken here. No spare cable either, just install a NEW cable before departure. A properly routed NEW OEM cable should last at least 40,000
miles or more. I'm still on original, but time for a change.

Good luck, work on your sand riding technique, in a few HARD days of sand, you hopefully will get better, fall less and go FASTER!