[aspenhall]

Let him call you in the morning, after school, right before bedtime etc....

Give him something of yours (valuable to you) for him to take care of for you till you get back...a watch or some other token that YOU NEED...that you wouldn't normally be without...or a task that only you can handle, that can only be done (conveniently) after surgery...remind him you're still needed back...that you haven't found a replacement for yourself...make sure Sara says "I'll leave that for your mom to do when she gets back" for as many things as possible...then when you return, Sara can help you do those things so you don't actually have to do them post surgery.... Have Sara take him to go pick out a cuddly soft thing to make you feel better when you get home since you'll be "hurting and need to be gentle"...have her help him make plans for your return, like posters, balloons, a special cake etc...