Injectable estrogen schedule question

I just received my injectable estrogen today and plan on taking my first dose in the morning. I was changing my patches on Sunday and would like to stick to that schedule. Do I take my injection tomorrow and move it up 1 day for the next 2 weeks to get to the Sunday schedule or should I wait and start the injection on Sunday? I took my patch off on Sunday as I always do and didn't put a new one on in anticipation of my injectable being delivered today. Thank you