~Another thing to do is get some earplugs. When I'm setting up conditions as best as I'm able (with kids in the house), I go into the spare bedroom for 2nd half of night, put in ear plugs and use an eye mask. (if using earplugs regularly good to put some olive oil in ear occasionally to prevent ear wax compression). Can be very frustrating where after a long journey back to sleep you then are awake in response to noise in the house.
Yet I agree with Dolphins thoughts. Its possible at other times to not feel at all reactive to various sounds in the environment. I know people who manage to use sounds around them as a support in sleep practices, much the same way that the breath can be a support in meditation.
I try to create the best conditions I can and then work as well as I can with what happens (which is beyond our control).
Good luck with