Liz - Good work so far!
The #1 thing you can do for spleen deficiency, along with changing your diet, is eating less. Since we are blessed to live in such an affluent culture, almost everyone I know - myself included, much of the time - eats way more than necessary. . . because we evolved in an environment of scarcity, where we may have had to make use of every morsel, we are sort of programmed to overfeed if given the chance.
Everything that goes into your body needs to be transformed by the spleen, which can get overworked. So try not to eat to the point of being full. . .some say stomach should be half full, some 2/3, etc. . . I try to stop eating before my desire to eat has been destroyed. Desire = the impulse to live. . . By preserving desire, we preserve life. Then you can always have another small meal an hour or two later if you get hungry again!

Also - the spleen is most active in the morning (according to tcm) and the digestive fire is most active at midday (according to ayurveda) - so taking your biggest meals in the earlier parts of the day, with a lighter dinner can also help.

Godspeed
Zeke