My second child, son, was a terrible sleeper but we found if he lay on your chest by your heartbeat he would sleep peacefully. One particular day he was wide awake and very noisy so my Dad picked him up sat in a big chair, lay him across his chest with his arms round him and within five minutes he was asleep, and Dad fell asleep as well. They both slept for about 2 hours snd Dad only woke as he had cramp. My mother said he had done the same with his own 6 children and we had all survived. One time I took same child to bed about 8 o clock, fell asleep with him and didn’t wake until 7 next morning. My lovely husband checked we were both ok and left us. 😴