PIO shot advice

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So, from the start of transfer, my doctor said to inject PIO daily from 6-8 pm. I have done it daily for over 8 weeks now at 6pm on the dot.

I am going to a fair tonight and want to do my shot before going but is 5pm too early?

What would you guys do? I can just bring it in but I don’t find fairs to be sanitary or sterile lol.