Been there. Had a clip of my dog stealing a sausage off the counter hit a million a couple years back. First piece of advice, turn off notifications for that app for a week. The comments get weird fast and half of them are people arguing about something you didn't even film. Second, if brands start sliding into your DMs offering free stuff, read the fine print before you agree to anything, some of them want you to post a set number of videos and it turns into a job you didn't ask for. Let it ride and enjoy the ride, but don't feel like you owe anyone a follow up.