How long did you go between a BFP & a BFP on a digital?

I got my first undeniable BFP last week on Friday. My beta that day was 6. So here we are on Tuesday & I have yet to get a positive on a digital. I’m still getting positives on FRERs and other non digital tests. I also had a beta drawn yesterday but don’t have the results yet. How long did you go between your first BFP & a BFP on a digital?