Booking holiday whilst TTC

Hi! Me and my husband have been TTC baby #2 for 7 months now, and we’re planning a big family holiday with the in laws for next summer, each month I keep saying well we will have a 4 month old... then 3 month old and I’m still not pregnant, my husband keeps telling me that we shouldnt put our lives on hold whilst TTC and I know that he’s right, but booking this holiday is stressing me out! Has anyone experienced a similar situation? Thanks xx