Hello and hope you are doing well.
Understand your concern. Inability to sleep could be problems with initiating sleep or maintaining sleep is called insomnia, which can be due to sleep disorders or due to physiological causes as explained by you. It sometimes takes time to adjust to changes in surroundings. Also, don’t start ‘thinking’ about going back to sleep. The more anxious you get, you are going to face more difficulties falling asleep and this becomes a vicious cycle. So, just relax and let the flow envelope you. Follow good sleep hygiene measures like going to bed at the same time, waking up at the same time, avoidance of alcohol, smoking and caffeinated beverages. Maintain warm, comfortable bedroom environment and engage in relaxing activities like a warm bath before bed time.
Also, don’t nap during daytime and exercise during daytime as this promotes sleep.
Hope this helped and do keep us posted.