How to increase the /dev/vda3 partion size in VM , already 4 primary partion created in VM

Hello everyone,

I have created one VM (rhel7.9) , and then resized VM storage as metioned below

First resize : vda3 200GB added to LVM rhel-var
Second resize :vda4 10GB added to LVM rhel-root

please check lsblk and fdisk output in attached image .

Now I have to resize again and add 1.5T to the rhel-var , but since only 4 primary partion allowed , I am unable to add more storage , I tried to delete vda3 partion by fdisk , and created again , but still same 200GB is allocated again since vda4 is already configured from next sector , so vda3 is not increasing beyond 200GB .

With this situvation how to increase the partion size , please suggest