Biopsy Appointment

Hi,
My husband attended his GP with lump in his groin on 7th June. GP said it was from a small black spot on his foot. He referred him to a skin cancer consultant who he saw on the 14th June. The consultant said he would need a biopsy and scans. He sent his report to Waterford University Hospital. The consultant is now on three weeks leave. We have been anxiously waiting for an appointment and today my husband, Tom, received an appointment for scan next Monday and biopsy on 17th July. I know that biopsy results can take more than a week to come back. For me, Tom is taking a less worried view, this period from noticing the lump to diagnosis is very long.
My question is: is the 7-8 weeks wait losing vital time if treatment is needed and if it is can we do anything about that.