Talk

How much is he having at each feed?

The thing about hungry baby milks is they're more difficult to digest than first milks. That's why they make babies go longer between feeds. That seems wrong somehow.

Honestly, at a month old 2-2.5 hours isn't too bad. And waking up and wanting milk immediately is normal - both of my babies did this. You'd have to get the bottle ready at the first sign of stirring otherwise it'd be panic stations within minutes

Is he putting on excessive weight? Does the HV think you're over feeding? If not, I'd carry on as is because things are very likely to calm down soon.

Wind could be an issue, and dummies are a godsend for sucky babies. Ignore all the snobs and pearl clutchers on here who act that dummies are Satan's own invention

Hungry baby isn't really for that age of baby despite it saying suitable from birth. 2-2.5 hours is pretty normal at 4 weeks. How much are they taking in each bottle?