have you talked to your doctor about this- and/or sorted out the reason that you needed laxatives in the first place?
if so, why don't you start taking a little bit less- say... a third or a quarter less than usual, for a few days, and see how it goes? you could give it two weeks, and see how you feel at the end of that period. then re-assess- maybe after the 2 weeks (or even a month?) if everything is going ok, you could drop down to a half dose, and go from there. if its not going ok, you can try another strategy.
that way its not like you're commiting yourself to so much of the emotional and potentially physical discomfort of stopping cold- you might feel a little less nervous knowing that its something you're taking charge of, but doing in small steps, and it'd probably be easier on your body too.