Tts.google_cloud_say, want small delays between sentences, are there an easy way?

Hi, I’m using tts.google_cloud_say and it works great to broadcast messages to one or all of my cast devices in the house. Though, I feel google speaks to fast where it doesn’t create a natural pause after end of sentences. This is not about slowing down the speech but a natural ending after the period (.)

I can split my automation into several sections and use delay: and a new service: followed by a new data_template: but the automation get seriously long - and - I need to add new value template each section if I need to use them several times.

Are there an easy way around this - are there a “delay” command that can be used within the data_template I’m not aware of?

I have found using a comma period ,. makes more natural sentence spacing.
Hope this helps.