It would be good to keep him more active during the day. Is he 8 months now? I would be giving him at least 40 mins twice a day off lead and training in between so that may help.
I would crate him though - although at this stage this may not be easy. The reason I would crate are many but all for the benefit of the dog!
Busy dogs, working dogs or very intelligent dogs dont have a great off switch. Although they cat nap and sleep they still have an ear out or even a nose out for what is going on around them.
If they are crate trained you will find that they totally relax in their crates. Their sleep is deeper they are more relaxed and you tend to have a contented chilled dog. Not slow or not up for fun just relaxed and totally rested.
Also if anything changes eg go on holiday, they have to stay with someone else or even day visits to the vet are less stressful if they are used to their crates. Crates = chill.
Who knows why Teddy is waking early - a later meal may help a late night walk may help but if he is free to roam you can guarantee that he will stir and think "Oh I'll just give that a chew, ah what's that I'll give that a sniff etc etc.
If he is crate trained he can just chill - he does not have to be on guard at all.
However at 8 months you will have to work hard and slowly to get him used to his crate but personally that is what I would do.
Also I would not be adding meat or water to his food. The one benefit of dry food is that it helps to clean his teeth so by adding meat or water that takes always that advantage. Also it is hard for dogs to digest meat and dry food in the same meal.
If he does not eat it - tough - he will when he is hungry. He is slightly manipulating you by getting you to add extra. In the same way he may find himself on your bed in the morning 
I agree though 4.00am is just way too early! Shame you can't just send him downstairs to watch the cartoon channel. (I of course never ever ever did that with my DC's)