Usually for acclimatizing you would add abit of water, wait 10 mins, add abit more water, wait another 10 minutes, so on and so forth until the original volume of water at least doubles. For shrimps they are a lot more sensitive so you have to go through the process a lot slower. In future you might want to drip acclimate, it’s more gradual and you don’t have to keep going back and forth every 10 mins. Just use those air pump tubing and gravity drip the tank water into the bag. Simply tie the tubing into a knot to control water flow. Tighter knot = slower flow. I usually do 2-3 drops per second.