You can often get free, short-term counselling from your GP, so might be worth asking them.
There is also the charity Family Lives, which has a free and confidential helpline to support parents. Take a look here.
I saw in another post that you’re based in Northern Ireland, so you can find a local counsellor or psychotherapist using the Counselling Directory. There is also Contact, which is Northern Ireland’s leading independent counselling service for people of all ages, but I think that is a service that specialises in helping people in crisis in particular.
Plus, there is always the Mencap helpline! You can call them on 0808 808 1111.
I hope that helps