Sounds like you want to dynamically introduce date strings. If I understood that correctly you can do it by using the Templater plugin and the native date command
I created Daily and Weekly templates in Templater. Then in Templater you can specify custom strings to be parsed and leverage the date command. For example I wanted “navigation” in my Weekly so I could quickly jump to the previous or next week’s note.
Here’s the token I used:
{{previous_friday_weekly_review}}
Here’s the date command:
date -v-2w -v+fri "+%Y-%m-%d weekly review"
Now when a Templater template is included that includes that token it gets expanded to 2020-12-11 weekly review