Welcome to FitDay
. I like your attitude of not giving up and just letting things stay the way they are.
You might try internet-searching something called Sit and Be Fit; I don't have firsthand knowledge of it but it's been discussed here before and is a way of exercising that does not involve being up and around.
As for tips, check out these links...that's a pretty broad question to ask, but this link should be helpful. FitDay Discussion Boards - Threads Tagged with fitday best of series