Temporal Series Graphs - How to set a custom start date on the X-asis

[Constanzartus]

Hello,

I need assistance with a time series graph in Looker Studio. I’m trying to compare five different sales processes, and I need to be able to set a custom start date on the X-axis. My goal is to display a year-and-a-half projection, but currently, it only allows automatic settings. I’m using the month-day format for the dates because I want to avoid including the year. Unfortunately, I can’t use the "period" filter since it adds the year to the date. 

Thank you very much in advance!