"Children are eating out of piles of garbage" - that was the answer from UNICEF's Salim Oweis when I asked if aid was now getting to those who need it.

The phone call was intended for background to try to get a clearer idea of the latest aid distribution in Gaza, but it's a conversation I won't forget.

"Parents are crushing whatever they can into water, most likely unclean water, because there is no infant milk or formula. The reports are horrific," says Salim.

"Our colleagues are struggling to find enough food for themselves."

It's been two days since Israel announced humanitarian pauses to allow aid to get to starving people in Gaza but it's not yet being felt on the ground.

Salim tells me more aid trucks have entered Kerem Shalom - the border crossing between Gaza and Israel - but that's only the first stage of the journey.

UNICEF then needs permission to collect the aid and bring it inside the Gaza Strip.

Then it still has to be taken to partners on the ground for distribution. It's a lengthy process of clearance and coordination and it needs to be accelerated. Fast.

So far, lorries carrying famine preventative supplies have been collected - that's high-energy biscuits, food for children between six months and two years, infant formula, vaccines and nappies.

Therapeutic food, which has a peanut butter like consistency, and is aimed to treat malnutrition has arrived at Kerem Shalom but there's no confirmation yet on whether it's made it in.

I had not heard of therapeutic food before. I've since learnt it is high in energy and micronutrients and won't treat the complications of malnutrition, but will get a child out of the danger zone.

There is an ongoing issue of desperate people attempting to loot these lorries as they enter Gaza.

"The more aid that goes in, the more the looting will decrease because people will trust that there is now food coming back in," says Salim.

But the amount getting in is still a fraction of what is needed.

The situation is so desperate, not everyone can wait until tomorrow for help. People are now dying everyday in Gaza due to hunger.

There is no time for wrangling over detail. Food is needed in mass quantities now.

We've had warnings for months that Gaza was on the brink of famine. It seems it's here in all but name. Let's not wait for an official declaration.

For those working to help the most vulnerable and innocent in Gaza, it feels extremely personal.

"The rest of the world has failed the children and the civilians of Gaza," says Salim.