How to create a component which has multiple parsys based on a multifield?

I am creating a component wherein the component will render multiple parsys based on a multifield, i.e., if I add three multifields then three parsys will be rendered on the page. I am using the following code to iterate and display multiple parsys on the page:

Here I am storing a list in Java based on number of items in the multifield. I am storing a value of tab+i in the list which mean the values stored are tab1, tab2 etc. and I am using each item of the list as the parsys path in jcr which gives the following structure:

The various nodes tab1, tab2, tab3 are the parsys generated from the above sightly code. These parsys only appear when components are added under them so each of them contain one component. The problem arises when the author deletes one multifield value from the dialog. The dialog now contains only 2 multifields but the parsys nodes persist in the jcr. This inconsistency between the nodes and the multifields is throwing error and causing the component to break. I need to maintain exactly as many nodes as there are multifields in my dialog.