I babysit my 2 god babies with my son for my bff during the week. Before Covid we had a routine and set days with no issues. My son has a condition that puts him at high risk. Now her partner is going back to work on Monday with a different rota and they need me to babysit but I am still not allowed to see her inside her home, and my son is still on lockdown until the end of June. I am not able to have family look after him so I can go and babysit. I don’t want to let my friend down but I don't know what to do as I am NOT going to risk my son. Advice needed please.