While getting down from bus at an intermediate bus stop, always ask the conductor about the break time and come back at your seat just two to three minutes before.
In case you want to take a longer break at some bus stop due to natures call then inform the bus conductor about the delay so that he will wait for you.
Make a checklist in advance for all the items which you would be carrying during the bus journey. Check this list prior to leaving your home to make sure that you have not missed any item.