Welcome to SR, RiverFriend, and congratulations on becoming a father!
5:00 p.m. is also my toughest time of the day. I used alcohol to deal with stress that built up during my working hours. Of course, I always found that any relief I found from my after work drinking sessions was all too temporary.
It sounds like you know well the many benefits of sobriety, and that's a good thing. One thing that's helped me deal with the 5:00 urge is to make sure I've got something lined up to do at that time. It sounds like you enjoy working out - - this is what I do at 5:00 a lot of the time. A good hike or walk, or even a trip out to my vegetable garden helps me to take my mind off of drinking.
Best wishes with your recovery. I know that you'll get other ideas from the community here. It's been a great resource for me.