BRRRR !!! Should I factor in holding costs next time?

[Redgy Saint-Germain]

I have a duplex under reno right that I intended to use the BRRRR strategy on with 8% vacancy on the original numbers. My numbers are all messed up now because the contractor failed to deliver the units on time with all type of excuses. It`s been 108 days since closing, I`ve already paid the mortgage 3x and my units are not rent ready still. The question is "should I factor in holding costs next time on my BRRRR" ?

Redgy