Cherrypup is now almost 5 months. In some ways it sooo much easier, but we now have other issues!
The biting is mostly sorted, but not completely- he likes a lunge every now & again. The pees & poos are all outside and lead walking is ok(ish).
BUT...we now have jumping up at kitchen counters, barking like mad at bedtime & hating his crate. Worst of all is he's quite big now and likes to jump on the sofa which I know is really bad for him.
@Nordstrom we had similar worries recently and popped up the vet. They gave us special food to try him on for a couple of days to see if it helps.