If my mom, age 78, misses more than a couple of days, we see her speech and short-term memory decline rapidly. My mom says the meds (Namenda and Excelon Patch) make her spacey, less energetic, blah feelings, etc. -- and says when she misses a couple of doses she feels much better with tons of energy. But my sister and I see her go downhill with her memory, speech, etc. if she misses more than 2 doses of these meds. Any ideas? Thank you so much.