I wouldn’t say it’s a daft question though it’s certainly a difficult one.
My two pence worth is this. For the month when you are testing recipes aim for the lower end of your chosen intake as that will give you a little wiggle room…
Track your waist line twice a week and adjust your Huel intake accordingly. If your waist stays the same then skip the breakfast Huel, if your waist gets bigger then skip the lunch time Huel too.
Then once the tasting month is complete you can be more disciplined with your intake.
Good luck with the cafe/restaurant