Is $2,000 to clean up lead dust in a bathroom a fair price?

I am seeking practical advice to safeguard my toddler after a contractor sanded paint all over my bathroom, leaving lead dust everywhere. A home lead test swab turned dark maroon. I've tried contacting four different EPA abatement and remediation teams over two weeks; most were unresponsive or unhelpful. One contractor finally provided a $2,000 cleanup quote but has not scheduled the work, making me feel he wants me to clean it myself, possibly due to stringent EPA lead dust level requirements. My toddler's pediatrician is not concerned yet, as we sealed the vent and door, and we've been diligent about wiping surfaces. I'm exhausted from the situation and want my bathroom back. I'm also looking for advice on cleanup techniques, specific cleaners, whether special primers are needed for encapsulation, how to deal with peeling paint on cabinets, and if all porous materials must be discarded as the contractor suggested.