write earlier- sooner
Is this correct in a letter
I´d have lwanted to write to you earlier but...

Or just " I wanted to write to you sooner but...?

Other ways ?

Thanyou

Question

write earlier- sooner
Is this correct in a letter 
I´d have lwanted to write to you earlier but...

Or just    " I wanted to write to you sooner but...?

Other ways  ?

Thanyou

Answer

"I wanted to write to you sooner but..." is fine.  Or, "I wanted to write you earlier..." is fine too.