Sleep walking/ night terrors in 6 yr old

[PJ67]

My 6 year old son has started having this regularly. Sometimes he will wake up crying and we can settle him back to sleep, other times he gets up and can be talking but not really making sense. I phoned the doctor as I feel that it's started happening more often, at least 3 or 4 times a week but he didn't really have any advice other than possibly wake him up 15 minutes before it usually happens. Just wondered if anyone else has experienced this and whether there is anything else I should be doing. Thanks