Hi delsha,
The yang part of the organ is gone, but the yin part, the spirit is still there. Treat it as if it were still there, which means, just proceed with your practice. Let go of that thought, that your immune system is compromised, and,,,,,,,,,,,,,,fully enjoy your practice.
The stomach is very closely related to the spleen. Information in the level II manual, regarding the stomach system, also applies to the spleen.
love,
gallen
