Rather than come clean that all your valuations came down by 2-3x (the reality of what valuations are circulating on the market nowadays) just do things like raise convertible note with a cap of last round valuation and don't announce it on pitchbook/crunchbase.
It's not easy for VCs to just pause investing or invest in some other stuff than their "thesis" - some have agreements legally binding on what they would invest in and timeframes for spending the capital.