No. And don't think that subscribers are the whole point of YouTube. You are meant to be focused on getting views because if you have 100 subscribers and 1 view per video your not big at all. If your seriously just in it for the subscribers I think it's time for you to reconsider.
As for the schedule, no, posting every day is something that big and deticated youtubers do. Don't think that your going to grow by copying them. Be sure to have a stable upload schedule.