EOT - Covid 19

Good Afternoon Respected Planners, I am working on EPC Project guided by FIDIC form of contract Unlike NEC in FIDIC programmes cannot be rejected by client but there is a mechanism for acknowledging the programme on receipt from contractor every month. This mechanism involves writing back to contractors upon review of the monthly schedule with feedback on where we noticed there is programme irregularity

Contractor has just notified of a claim relating to Covid 19 with a EOT for additional 60 days from the key milestone date. One of the reasons giving by the contractor is that a particular activity which drives the critical path was originally planned for 7 days a week, however with restriction on the number of personnel onsite, the contractor affirm that this particular activity can only be achieved on a 5days working

I have looked through the activity in question and what struck me was that the baseline and the subsequent programme before the delay event did have a 5 days working calendar.

Without going into much effort, can I advise the client to reject the EOT automatically as it does not align with the claim ?

Appreciate any useful advise please.