I cant tell you what strategies I have tried with various collagens and protein powders
I dont drink milky shakey type drinks to have to be creative
I use Alpha01 collagen powder and was in the habit of putting it in coffee as coffee is so strong that it counted out the flavour (its called flavourless but of course they're not), I dont know if its an option for you to have cold coffee?
I do put it in porridge. I make up porridge using 1 pint of full fat milk and 100g of porridge pinhead steel cut oatmeal
I heat the milk up until its too hot to dip a finger in, then add scoops of powder, I use 5 scoops to 1 pint, it needs stirring a bit, only then do I add in my porridge oats (which I toast in a pan first to make them biscuity)
I divide the porridge into portions but it depends how much you like for one portion.
Yesterday I cooked up some red lentil dhal and used 300ml of water mixed with 5 scoops of the collagen, it took a while but it did dissolve and went clear. I poured the water into the lentils and cooked as normal, the strong spices and some mango chutney disguised the flavour so this is quite successful