In my experience it takes 4-6 months to feel like you belong. You don't feel like you have that much to do because they're not giving you that much to do yet.

In my experience it takes 4-6 months to feel like you belong. You don't feel like you have that much to do because they're not giving you that much to do yet. They are giving you time to look around. No one expects you to rockstar the first day (or month even). After you look around for a while and get the lay of the land, you're expected to spot places you can pitch in and one fine day, you'll see something that really needs doing, say excitedly "hey! I can do that", own it, and then you'll feel like you're home. Just jumping in to a big office with an energetic team is extremely disorienting. A month in and you've already battled through their (undoubtably weird and opinionated) tool stack and are submitting? Good work. Carry on. Heh, I've taken that long to get a workstation allocated, get a parking pass issued, and find the bathroom (not in that order...).