Renderings for Kangaroo Oral Care Toothbrush

We have a project that is going to be a child's toothbrush. It comes equipped with 3months worth of toothpaste inside. You are suppose to throw away your toothbrush every 3 months. We have the original renderings from the client, when it was an adult tooth brush. Can we revamp this into a kids one. Also, is there anyway to add A flosser part? We need manufacturer ready renderings Unique Positioning Statement: Kangaroo Oral Care – the first and only Total Oral Hygiene Solution for dental health. Convenience and expert results are easy with its all-in-one brush, toothpaste and flosser. Did you know, dentists recommend you change toothbrushes every three months. With Kangaroo, when your toothpaste runs out you know it’s time for a change. Kangaroo – the easy way to a perfect smile! The info regarding how much tooth paste it takes per brush. Based on what I previously had sent, if we can have 7.5mm come on to the bristles each time the lever is pushed up, we can get 3 months worth. Im guessing it would be 7.5mm (amount of toothpaste at 1 given time) x 2 (twice a day brushing)= 15mm of toothpaste for 1 day x 3months (90 days)= 1350 mm of toothpaste to last for 3 months. The question is, how big does the handle hsve to be for 1350 mm of toothpaste snd make it so 7.5mm comes out each time with the lever being able to control 7.5 each time with 3 months of lever pushing or turning. If that is just to big of an amount to hold in the handle we would like at least 2 months