I would highly recommend you don’t drip acclimate. As the fish release waste (ammonia) in the water the pH also drops. That is good as ammonia becomes less toxic the lower the pH. But as you drip acclimate the pH rises and the ammonia becomes more and more toxic. Just allow the bags to warm or cool as needed and then open the bags, pull the fish out (or pour them into a net) tossing the toxic shipping water, and get the fish into the tank/clean water ASAP. Scarry, I know. But that is how I handle all of my fish. MUCH better results this way.