Pre-Settled Status & Comprehensive Sickness Insurance

My wife is an EU citizen, I'm US, our kids are both dual. We currently have a registration certificate for my wife and older child, a residence card for me, and pre-settled status for all of us. My wife is self-sufficient (she's unemployed but I support her through employment). Under the EU rules, that meant we had to have comprehensive sickness insurance, and we do.

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However, now that we have pre-settled status, can we cancel the insurance? I know you don't need to show proof of CSI when *applying* for pre-settled status, but in this period where Brexit hasn't happened yet but pre-settled status is being issued, should we keep it until Brexit actually does happen and our registration certificate/residence card doesn't matter anymore, and we're really *on* pre-settled status?