Portugal with a 13 month old

Need advice! First time travelling with my baby. Just booked 11 days in Portugal at the beginning of June with my husband and child but I’m really not sure about the right choice for our itinerary… I like having a mix of city, beach, country when travelling but I don’t want to do to much moving around with an infant… I was hoping to do Lisbon, porto/douro and Algarves but my husband thinks it’s too much and would prefer doing Lisbon, porto/douro and take time to visit sintra/cascais, nazare. Any thoughts??