lexotanil inderal withdrawal after 3 weeks use?

i am going to use 20mg inderal and 1.5 lexotanil daily for 3 weeks. after these 3 weeks, will i suffer from withdrawal symptoms like i have been reading in a lot of posts and articles? or these doses will not cause any trouble if i stop all at once after 3 weeks?

i also got prescribed prozac 20mg daily at night. but not sure if i will take this one as i am not always in depression mode (happens from time to time when i am really down)

i was prescribed lexotanil for 3 weeks(exactly 21pills) and the doctor did not tell me that i will need to slow down dose of anything... so i assume i won't have withdrawal symptoms?