Is it better to train a 8 month old puppy after feeding?

No, it's not generally best to train a puppy right after they've had a meal since dogs get sleepy or lethargic after eating. Additionally, training sessions often involve rewards as positive reinforcement, so if an animal's belly is already full, treats may become less interesting in that situation. Instead, aim to have the puppy's most recent meal be about an hour or two before the actual training. This way, they'll be at optimal alertness and receptive to commands and treats offered as rewards for good behavior during training.