Hard time to sleep

It's just so difficult for me to get back to sleep whenever I woke up from sleep and had to use the toilet. I've been trying to sleep at night time so I could do my thing by day time but it's just hard. I can't do it. Just like earlier I woke up after an hours of sleep and I wanted to sleep a little more so that I am awake and be able to get ready and won't be sleepy by 10am. It is the mall opening time. But it seems like I have to keep myself awake until then so that I am already in the DFA before it gets more crowded and today is Saturday the DFA open until 2pm only and it happens to be inside the mall. I know I'm not the only one having problems in switching time of sleep. Most of us do!