DS is 4.3yo. During the summer, he's struggled to get to sleep much before 9pm because it's been light outside. He has looked at books and chatted to himself happily until falling asleep. We've used a small blackout blind to help but it's not blocked out all the light.
On Saturday, DH and I went out and usual babysitter came over. When we got back she said DS had struggled to go to sleep and had been crying, saying he was scared. She ended up sitting with him until he fell asleep just after 9pm.
Sunday and Monday nights, he really fought going to sleep and kept calling out for us. Eventually he was asleep around 9.15pm.
Tonight, he was crying and saying he was scared. I asked him why he was scared and he said because it was going to get dark and he was scared of the monsters. I told him there were no monsters, that monsters aren't real and only in stories. I told him I'd read him an extra story (Thomas the Tank Engine) if he then went to sleep quietly. He agreed but then after the story and I went downstairs, he started crying again. DH went and sat with him until he fell asleep.
I don't want to get in the routine of doing this but also want him to feel safe. Any suggestions?