Moving VLAN IPs

Currently my VLANs are like this:
VLAN 1= 10.2.x.x
VLAN 2= none (not used)
VLAN 3= 10.3.x.x
VLAN 4= 10.4.x.x
and so forth.
I want to move VLAN 1’s IP to VLAN 2 and give VLAN 1 a 10.1.x.x IP. such as this:
VLAN 1= 10.1.x.x
VLAN 2= 10.2.x.x

How easy or hard will it be to move these IPs?
Thank you.