Digital Ocean - Loadbalancers automatic SSL

So I want to try to set up loadbalancers in DO instead of forge (One benefit, before anyone asks is that its a flat 20$ for however much traffic, otherwise we have to get a normal server & provision it in Forge as a load balancer).. are there any downsides to this?

But my Question was that following a DO guide to set up a SSL - it seems wont be an automatic task.. I would need to do it every few months again if I want to use LetsEncrypt.. anyway to automate this? DO's guide mention we should probably do it but not HOW..