Can I take the first tablet from the new blister at 16:00?

Hello, I have a question about the hours of using birth control pills. I take vines and I'm currently on the second day of the break. So far, I took the tablets at 8 p.m. On Wednesday, I should already take a tablet from a new blister, can I take it at 16 o'clock instead of 20:00? And my second question is, How long does the withdrawal bleeding more or less last? Today I got a period and I wonder if it will last the same as the normal period (that is, usually 4-5 days for me) or will it be shorter, Thank you for your reply.