Let the hunger meter go down (it's either that or the happiness meter, but the happiness meter may be hard to see when there's only a sliver of it filled up) all the way. I don't recommend letting both the hunger and happiness meters empty at the same time. The attention icon will turn on. Wait about 15 minutes until it turns off. That is one care miss. Feed your character only one meal (instead of refilling all of the hunger bowls, so that you don't have to wait for them all to empty again) and wait for your character to call for attention again. From there, wait 15 minutes for the attention icon to turn off, and you'll have another care miss. Repeat until you get the desired number of care misses. This is the quickest way...for me, anyway.