You can read it as text and convert it to minutes later, see this example
library(lubridate)
time <- "33:32:00"
time <- hms(time)
as.numeric(time)/60
#> [1] 2012
Created on 2020-03-08 by the reprex package (v0.3.0.9001)
If you need more specific help, please provide a proper REPRoducible EXample (reprex) illustrating your issue.