Hi Seema. You’ve had some great responses already, but I’ll chip in.
It sounds simplistic, I know, but if you’ve gained weight, it’s due to intake of more calories than your body is burning. Nothing more and nothing less than that.
3 x three-scoop meals is 1368kcal, assuming these are level scoops and not compacted, and you make your shakes with water and nothing else added in.
All extras that you add to your shakes, or have as snacks, will add to the calories you’re consuming. A large banana has 121kcal, for instance. Cashews and pistachio nuts are all too easy to consume in quantity when snacking, and a small 1oz portion has just over 150kcal. Milk in tea and coffee also adds calories - 25kcal per cup if using semi-skimmed (four of those a day and you’ve added 100kcal to your total). If you add sugar, then of course the calories increase.
All these extras quickly add up. My guess is that this is where your calorie intake is stacking up. It’s easily done.
The best advice I can give would be to check the calories on everything you eat and drink before you consume it, and keep a running total daily. Electronic scales are very convenient for weighing portion sizes - I use mine all the time.
I’m a fairly big bloke, 5’11" and with a sedentary life-style, partly due to inflammatory arthritis. Currently, I’m having 3 x two-scoop Huel shakes per day, made with water and around 100ml of unsweetened almond milk (that’s about 950kcal with the almond milk). I add various low calorie flavours to my shakes - a heaped teaspoon of unsweetened cocoa, a tea-spoon of coffee granules, a tea-spoon of smooth peanut butter, salted caramel or almond oil baking flavouring, powdered cinnamon and ginger. I estimate that I consume around 1000kcal from shakes because of those additions. Throughout the day, I have a few snacks (I check the calories on everything first!) - a small bag of Snack a Jacks (89kcal) or Twiglets (about 100kcal), a half-coated chocolate rice cake (80kcal), a satsuma, some grapes or half a banana (60kcal), or maybe even a heaped teaspoon of peanut butter to lick off the spoon (disgusting, I know - but only 40kcal and very satisfying!
). Plus, I have a few coffees with 1% fat milk in the morning (maybe 50kcal), and a low-calorie, alcohol-free beer in the evening (26kcal). So, on top of the shakes, I’m probably consuming another 300kcal, give or take, bringing my daily total to around 1300kcal (sometimes a bit more than that). On a Friday evening, I have an Indian take-away - but I always pick something sensible with chicken or king prawns and only ever have plain boiled rice. Assuming the take-away has 1000kcal, that’s averaging out at 142kcal per day.
With this routine, I’m losing weight at a decent rate. I was 17st 5lbs a few weeks ago, and now I’m at 16st 5lbs. My target is 15st, at which point I’ll see how I feel and might try to drop another half stone or more.
One last bit of advice, re weighing yourself. Do it at the same time each day (in the morning is best, after your loo visit!). And don’t worry if your weight stays the same or even goes up by a lb or so on occasional days. Look at your weight change over a week or two weeks, and don’t stress over little fluctuations. If you keep strict control of your calories, the weight will come off.
Good luck, don’t give up hope, and let us know how you get on? 