OP, I'm sorry I didn't have time to read all of the replies, but wanted to let you know of our experience.
My child is not dry at night at 6 1/2, they have other (unrelated) health issues that stop them getting out of bed so we were not massively concerned, assuming it would come with time. Was dry in daytime at about 4 1/2, but had a few accidents in reception year, and year 1 as couldn't get to toilet in time. Part of the night-time routine was wee when getting ready for bed, put pull up on, and then another wee before getting into bed. But, still every morning, there was a full pull up (huggies are great!) and often the pull up would leak as to much wee and result in wet bed.
During a visit to school nurse in Oct, we were discussing all health issues and mentioned about not being dry at night. She said she would refer to local Enuresis nurse for guidance.
Within a few weeks we had an appointment and were seen by the nurse. She explained:
1 - it is hormonal - there is a hormone that tells the bladder to make concentrated wee when you are asleep (why 1st morning wee smells), its this hormone that is often lacking in late bed wetters
2 - it can be genetic (DH was 10 before totally try - he took medication)
3 - Can be due to small bladder
4 - lifting and sitting on loo whilst half asleep is not recommended as its not teaching them not to go, just they can go when asleep.
There are things to help - something that rings an alarm when they wee at night so they wake up and take themselves to the loo, thus no wet bed.
Medication that gives the body the hormone to help.
As my child cannot easily get on of bed at night without affecting other treatments, the nurse suggested to try the medication. They are small tablets that dissolve under the tongue. The medication last 8 hours only, and there is no build up with it, so if none taken, no effect.
1 improved matters, but still wet pull up, so nurse doubled dosage. Much better now, but still a little wee in pull up most mornings. So suspect a small bladder so being referred to specialist for further investigation.
Please do seek guidance asap! The nurse in my area will soon not be able to run her clinic, the service is being withdrawn, and she doesn't know what will happen to her case load. Apparently, it is being closed throughout the country so the sooner you can get help the better.
Also, I was told by her that they liked to know about children that are not dry at night from when they start school, so support can be offered as soon as possible.
I hope this helps, and sorry it is so long!