After you file

So I filed in early January and hadn't received the 600$ stimulus for my kids and I, then a week later got it direct deposited. Do I amend my taxes? Will they fix it on their own? Because I still haven't gotten my taxes yet and there is no progress on the irs website. I still haven't gotten the 3rd stimulus check for my children and I either. I dont know if my taxes are effecting that, but I really need all of this money so I'm just looking for answers in what to do?