How long is it ok to let a starter go for?

I started my starter on Thursday and some things came up I might not be able to brew until teusday or wedsnday. Is this going to be ok? Details of the starter are 2 pints water 1/2 cup DME boiled/cooled to 65, pitched in flask on a stirplate. Yeast is WLP802 Czech Budejovice Lager
thanks

I would put it in the refrigerator and use it with out a thought.

If it is 4+ weeks old I would give it another shot of wort.

That’s a small starter for a lager yeast. You could use that time to bump up the volume.

should I add to it (more water and DME) or just let it go as is?

Can you go .75 gallon? Milk jug would work if you don’t have a glass container.

Yeah, add more DME and water. ^^^ +1 Cleaned and sanitized, cover with foil.