thanks for your reply really appreciated
It may be nothing at all since some people, not only babies, will nod off unexpectedly. But I would talk to his pediatrician about this and his muscle twitches.
Ive noticed the spasms in the neck or shoulder muscle when he was about a month old, and when he sleeps he can sleep from 15 minutes to an hour no set time
When you day he falls asleep, for how long does he sleep? Are the spasms in his neck as new as the sleep events?