When you say you struggle with milk this would be cow’s milk in particular? And by struggle do you mean you suffer from digestive issues after consuming? It may be that you are sensitive to the lactose… How did you find the initial 3 days of Bodytrim shakes? These will have been a lot higher in lactose content compared to the shake you are now consuming.
Have you tried using 1/2 a cup of soy milk instead of the dairy? Soy milk is the most similar nutrition- wise to cow’s milk so could be a great alternative protein source.
Another thing you could try instead of milk could be to use a yoghurt such as the ‘De Winkel Natural Plain & Unsweetened Acidophilus’ yoghurt- this one is a good source of protein but also very low in carbohydrates and sugars which means a lower lactose content compared to dairy milk. If this made your smoothie too thick you could always add a little water to get a nicer consistency.
Your Luxe protein powder may be a dairy derived protein (does it state ‘whey’ in the ingredients list)? This could also be contributing lactose. See how you go with the above suggestions and if it’s still not feeling quite right perhaps you could try swapping the whey protein powder for a plant based one that will have no lactose.
Let us know how you go 🙂