2 scoops of Huel = 400 cals.
Losing weight comes down to calories in versus calories out. Using Huel can help make it easier and 400cals of Huel is one of the most filling 400cal meals you can have. Everything else only makes marginal differences here and there. So if you have a trick that allows you to lower the amount of calories you take in, it probably outweighs other benefits in my opinion.
So first you have to calculate how many calories you use in a day. This will give you a rule of thumb
https://tdeecalculator.net/ is a good resource.
In general you want to consume 500 cals per day less then you would use up. This is 3,500 cals a week and equals a pound of fat or just below a 1/2 Kg. This is generally considered best for sustainable weight loss. Some people can cut more clas, others less. Aim for something sustainable to you. Don’t regularly be going super hungry or you will fall off the wagon.
You also need to track how many calories you use. The app My Fitness Pal is a good way to do this. At first it will be a pain. However, it gets quicker as the app remembers what you eat and its becomes a cinch to input meals. Its probably best to by a scales to accurately measure portions. This isn’t as bad as it sounds and I regret not doing this sooner.
I have lost a few kilos, but started out the same as yourself. Here is my regime to give you an idea. Play around and find out what works for you.
Huel in the morning - 400 cal
Huel for lunch - 400 cal
Dinner - 800cal (or so)
Hour long walk
Huel in the evening - 400 cal
If I stick to this I lose weight. If I eat crap between meals or drink a lot of booze I stay the same (unless I go totally bananas). If I don’t have a Huel late in the eve I will cheat. So even though eating late is considered bad by most, it is defo the lesser of two evils for me.
Drink Huel slow to feel fuller, you will need to drink more water during the day than you used too, and expect to fart a lot for the first month!
Best of luck!