I think the advice from Amber on this topic (here and in the podcasts) is really solid, not just what to do but in a way how to do it. Lifestyle change, habit forming, call it what you will but it’s hard to make it stick and it’s clear she has put a lot of thought into it. Great addition to a team that is already strong on this particular topic.
For the OP I think they answered their own question, shave a few hundred calories off every day and think of it as long term project.
If anyone is looking for faster results, i.e. up to a kilo a week of fat loss, I have heard the argument (from Michael Hutchinson, British cyclist/author) that calories burned using just fat as fuel don’t need to be replaced as much so if the training load was largely low intensity you could achieve a bigger deficit than 500 a day without causing problems. This worked well for me from October through to Christmas but I wouldn’t be able to maintain it while doing interval work.