ANSWER:

Of course. You can have ten bottles and recite on them all and blow. 

https://www.assimalhakeem.net/2014/06/18/what-is-ruqyah-and-how-one-should-do-it/

QUESTION: Sheikh can blow into more than one vessel for ruqya purpose ?

Ruqyah | September 9, 2022 11:59 pm
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QUESTION: If someone asked others to do Ruqyah for himself and came to know  the “hadith about 70000” then how should he repent for doing something permissible and continue wishing for his entry in Paradise without account?