Residents parent is high risk, so isolating for 12 weeks, NRP has a partner who is a key worker, so possible infection route from partner to kids to RP.
To complicate matters further, handovers have all previously been through 3rd parties, which obviously can't happen in lockdown, and public venues are a no go for RP. So logically it could be difficult anyway.
The kids are quite young, and currently have a good relationship with NRP, which could be lost if they don't have contact for 3 months. However RP feels the risk is to high in the current situation.