Marriage counselor called me financially abusive for wanting things to be equal between my kids and my step kids

When me and my husband married I made it clear that when we have kids finances for his kids and finances for our kids are separate. He has my step kids on weekends and 6 weeks in the summer along with every other holiday. He has two kids with his ex. We have two kids together. He pays child support to his ex. So I tell him he needs to put the exact same amount of money in a savings account for our children. Which he only pays like $300 in child support. So I ask him to put the same amount aside for our kids. Why I got called financially abusive is because my step daughter broke her glasses. She has a stigmatism. Mom didn't have money to pay for it. My husband almost never has money a week after his paycheck, so he took money out of our savings. The money is out savings. For our family. I told him. He is financially responsible for his kids. He said that I'm making him pay child support for our kids when he's with them full time. I said I'm not. I'm making sure they're being treated fairly. Our marriage counselor said I'm being financially abusive which I thought marriage counselors are not supposed to take sides? I told him this from day one that his money pays for his kids. Not my money or the money that is for our family.

@L I know I'm a blended family and I treat his kids kindly. All I wanted was separate finances. His daughter has a stigmatism. She can still see. She's not blonde without glasses. I still am kind to his kids. I'm not making him sleep in the cinder blocks evil step mom shit

@S the $300 is what he's court ordered to pay. He pays other things for his kids outside of child support which I don't care about as long as it's HIS money and doesn't take away from what he's paying for OUR home and he puts equal aside for our children.

@Shamika yes I work and I also put money into the savings. I'm the main breadwinner because I make more. I don't expect my husband to put the exact same amount as me into a savings. I do expect him to spend the exact same amount he's spending on his other two kids on our kids.