Expired Perscription Enanthate

I’m 7 weeks in and a short on my script for test c. My delivery is scheduled next week and the won’t send sooner. I got 0.2ml of my 0.5 dose today and I’m suppose to take another 0.5ml Friday. I assume I left a little too much in the bottom of my first vial when I tossed it.

Should I just not take anything and wait? Is it stupid to consider taking some never opened pharm grade enanthate I have from an old script. Says it expired end of 2023. I know it sounds stupid to even consider this but I hate to miss a dose if I don’t need to.