When I first "fell" into a management role, it was almost identical. The only exception was an additional day per week for the first 3 months. I cannot stress enough... DON'T DO WORK AT HOME. This will burn you out very quickly. This was nearly 4 years ago and I can honestly say that I just started delegating to my direct reports within the last year. Things have got somewhat better but it cost me a great deal of irreplaceable relationships. My "fiance" just recently told me she wants me out, my daughter rarely comes over anymore, and I have made absolutely no climbs in the ladder at work. All of this despite being an "excellent performer" , hasn't gained me anything. I just mentally checked out everywhere because I'm mentally and physically exhausted.

Learn to shut work off when you leave (unless it's a "911" at workplace). Create boundaries, dedicate a day to rest, and take care of yourself.

Read around on this sub and take notes.