A new book every few months? You simply need to write faster, there's no excuse for this pace.
(BTW, you and Mia Sheridan have been the two authors who I stay up until midnight on release day refreshing my Kindle because I can't wait to start the next book. So....Yay you!)
Well...this will be the 5th book I've published this year. :) Glad you have enjoyed them! It isn't the writing pace that is the issue, usually. It's the marketing, cover art, editing, formatting, etc. etc. that takes all the time. :)