Cloth only for sleep wash routine

I'm starting toilet training tomorrow, so my son will only be in diapers for nap and overnight. Currently, I do a prewash every day and my main wash every 3-4 days, but I'm definitely not going to have enough for a full main wash that frequently anymore. I also don't want to run a prewash everyday for just two diapers.

For those doing part time cloth, what does your wash routine look like?