Starting a family

Me and my boyfriend recently found out he's dad is dying of cancer and only has 2-3 years to live. We're both 19 and have been dating for 2 years, and we've both been talking about starting a family in the not so near future together, however since the news, he wants to have a baby before he's dad dies. I don't want to rush things as I don't know if I'm ready for a baby yet, but I also don't want him to miss out on his dad seeing him as a dad. Any advice is appriciated