Some of these things Marvolo’s mentioned in passing while waiting for Harry to fall asleep or while dressing in the morning before breakfast. An early riser by either nature or because of how busy he is, Marvolo spends half an hour most mornings, while they’re dressing and Harry's having his own breakfast in Marvolo's office while the man works (and works and works, it's all he seems to bloody do), an hour before Hermione’s even awakened, informing Harry about little things. Runes texts he thinks Harry might enjoy or the progress on primary schools or even further plans.