Some great info here.
Keep it simple.
Fuel all your training.
Before, during and after.
Run a deficit over a day, week, month.
Run the deficit off the bike.
This is a huge amount of time, much more than your training.
Do not get greedy, run a very small deficit, do it consistently, results will come.
If you get greedy and run a heavy deficit, you’ll more than likely falter.
Patience, patience, patience. Think months, not days. You’ll get there. You’ll have good days and bad days. Don’t fret, just aim at more good than bad.