Developmentally it's normal to wake more between 4-6 months and not just be a growth spurt

Something to do with change in sleep cycle, we went through it with Faye and tbh it was pretty grim

Then we would see light at the end of the tunnel, wakings would be back to once a night for a week or so and she would get teething pain (teeth coming through did seem to affect her badly) we'd be back to square one
Hope thing's stay as they are for you