Very frustrating for you, but you still sound positive and happy that you are making good food choices, which is something!
Try not to worry about .3lb - this is equivalent to a small glass of water! As I know you know, hydration levels and body waste can be responsible for several pounds of variation in weight. It's the changes over the long term that are more meaningful. 5lbs in 8 weeks is okay!
More exercise is generally good for the body, but may not always help with weight loss.. If you are doing 10,000 steps a day that is great!
As you also know, I have come to believe that eating a wide range of nutritious foods (most of the time!) and exercising enjoyably are more important than the number on the scales.
1000-1200 cals a day does not seem many though - what is your theoretical TDEE? I have read that we do tend to undercount calories consumed - I know I do...
Are you happy with your current way of eating? Do you feel your hunger is satisfied? Do you feel good with the foods you are (and aren't) eating? Is there anything you would like to change?
Best wishes as always