How to solve separate anxiety disorder for my 2 years old twin boys?

What i do is, there must be another caregiver to look after them. So when the caregiver is there to look after them, you should be doing ur things and not care tgt, hence they will also adapt with the caregiver well. When i'm nt around, he is ok with my Gmil, when I'm around, i have no choice but to let him stick to me, but mine is 1 year old plus. My 2 girl year old is abt the same. Same way.