Honestly, you're not alone, this formula is known to clump more than others, and it took me a while to figure out the trick too. The water temperature really matters; if it's not warm enough, the powder just won't dissolve properly, so try slightly warmer water than you think you need. Someone in my mum group swears by using a small whisk or spoon to stir first before shaking, and a few mums have also said a Dr. Brown's mixing pitcher made a huge difference in getting a smooth mix without all the foam. I'll be honest though, even with all these tricks, some mums still find it frustratingly clumpy and end up switching formulas altogether, so if the clumping doesn't improve, it may just not be the right fit for your routine.