Separated but not legally - financial status

My husband and I have been separated (not legally) since October 2025. The separation is not formal, as I chose to leave our home due to the verbal and emotional abuse I experienced daily. My husband has not worked for the past eight years, and I have been the sole provider for our three children, ages 22, 20, and 10.
After I left, my two older children came with me, but my youngest chose to stay with his father because he said his dad would be alone. I work as an online English tutor, and my income depends on daily client bookings, which vary each day.

Since the separation, my husband has constantly harassed me through messages and berated me whenever I could not provide more money than he demanded. My youngest child, who lives with him, attends a public school, and my husband insists that I pay for all household expenses, including bills, food, and other necessities. I also support my two older children, who are both in college. Recently, we had a major argument because he questioned how much money I earn and how I use it. He told me he has the right to access my finances because we are married and that the law requires me to disclose my income to him. He even went to the barangay and filed a complaint claiming I was not supporting them financially. I presented proof of the money I sent that month, which totaled almost ₱20,000. The barangay ruled in my favor, recognizing that I was providing support for my child. My husband argued that the support was only for our child and not for him, but the barangay stated that I am not obligated to support him and that he must support himself.

Previously, I gave them almost ₱5,000 weekly, but due to my unstable income and my health problems, I had to reduce the allowance to ₱1,500 weekly and provide additional food supplies for my younger child. This angered him, and now he demands that I disclose my full financial status so he can see where my money goes.
Am I required to support him even if we are separated and no longer living together? Am I legally obligated to show him my financial information? For context, he has not worked since he was terminated from his previous job due to substance abuse, and he refuses to work if the pay is low. I told him that if he cannot support our child while the child is under his care, then he should give me custody instead. I will provide for our child as long as he lives with me.