Newbie Here

Hi,  I did Atkins over 25 years ago and lost 70 lbs in less than 6 months.  I loved it, I never gained, and I swore I would never be fat again.  Fast forward, I need to lose that 70 lbs again plus a lot more.  I have been 100% on board for 3 weeks, just barely got the courage to get on the scale last Tuesday.  Got my test strips and I have been in the moderate range every single day.  I am also doing intermittent fasting as I am not hungry. So here is my usual day.  Up around 6am,  have only water,  do a 1 mile walk with the dog, spend the morning doing housework, and also working outside, mowing, weeding,  organizing.  I eat between 12 and 1,   2-3 egg omelet with 4 slices bacon.  Dinner is between 5 and 6,  I will have a pork chop, and a cup of lettuce.  I am drinking at least 8 sixteen ounce bottles of water each day, and do another mile walk after dinner.   I am only down 1 lb in a week,.  granted I have no idea how much I may have lost before I got on the scales.  Am I doing something wrong here?  I am 65