Always remember that results can happen regardless of record keeping. If you choose to measure progress with the way you look make sure you ask the opinion of someone you trust to judge if your appearance is changing for the better.
We can be too self critical at times with ourselves and may be making more progress then we give ourselves credit for, or vice versa.
If you record progress with photographs make sure the backdrop and lighting is the same every time for consistency and accuracy. This will ensure you reflect true results.
The other options are body measurements, my favourite method because of the feedback it gives in different areas of the body.
Be careful with using the weighing scales. This outdated method in my opinion doesn’t reflect what is happening with body shape and can give distorted feedback.