As above, this is a very young puppy, so all training should be fun and done in short sessions.
I would only ask for a behaviour when I'm pretty sure the dog will do it. That means not asking for a behaviour when the puppy is running around playing or sniffing something or watching something very distracting. So get the puppy's attention, then ask for the behaviour. If the puppy doesn't do it, e.g. doesn't sit when asked, I would put the puppy in a sit. Gently of course. If it struggled and jumps back up, hold it in the sit until it stops struggling. Then release without a reward (the release is a reward in itself, but the puppy shouldn't get a treat because it didn't do it and then struggled). This assumes that the puppy knows what the command means of course, which you can't really be sure of with a very young puppy.
Positioning/guiding the dog enforces the idea that when you ask for a behaviour, it will happen, no matter what. But if the dog cooperates there's a reward in it for them. So it's a good idea to keep a leash on the dog for training sessions so it can't roam or run away and self reward by grabbing a toy. Even if you choose not to position the puppy (some people don't like to), you should prevent the puppy from self rewarding if you've given a cue and the puppy doesn't respond.
Positioning also teaches the puppy to accept handling (but handling should be worked on separately anyway).
I personally don't like luring at all. I find that it takes AGES for the dog to actually realise that they are doing a behaviour and not just following the food around, plus the learning theory behind luring means that the finished behaviour is often slow and unenthusiastic, compared to other types of training (such as capturing/shaping).
But again, this is a very young puppy and you shouldn't be expecting much at this stage. Training should be fun.
I would only ask for a behaviour when I'm pretty sure the dog will do it. That means not asking for a behaviour when the puppy is running around playing or sniffing something or watching something very distracting. So get the puppy's attention, then ask for the behaviour. If the puppy doesn't do it, e.g. doesn't sit when asked, I would put the puppy in a sit. Gently of course. If it struggled and jumps back up, hold it in the sit until it stops struggling. Then release without a reward (the release is a reward in itself, but the puppy shouldn't get a treat because it didn't do it and then struggled). This assumes that the puppy knows what the command means of course, which you can't really be sure of with a very young puppy.
Positioning/guiding the dog enforces the idea that when you ask for a behaviour, it will happen, no matter what. But if the dog cooperates there's a reward in it for them. So it's a good idea to keep a leash on the dog for training sessions so it can't roam or run away and self reward by grabbing a toy. Even if you choose not to position the puppy (some people don't like to), you should prevent the puppy from self rewarding if you've given a cue and the puppy doesn't respond.
Positioning also teaches the puppy to accept handling (but handling should be worked on separately anyway).
I personally don't like luring at all. I find that it takes AGES for the dog to actually realise that they are doing a behaviour and not just following the food around, plus the learning theory behind luring means that the finished behaviour is often slow and unenthusiastic, compared to other types of training (such as capturing/shaping).
But again, this is a very young puppy and you shouldn't be expecting much at this stage. Training should be fun.