Help !!

I have a 5 year old and and 1 year old both boys and I want atleast 4 kids with the love of my life and he does too ! But I don’t want any Rightnow , I’ve been feeling a bit overwhelmed with two once my youngest started to walk and I feel like if I tell my fiancé that I want to wait on more kids , he will get upset or something . We’ve never had the talk about it , we just said if a baby happens sooner than we expect then it’s okay and we will love him or her anyways ! But I just really want to enjoy the ones I have rightnow and enjoy my fiancé more because we’ve never really had our time to enjoy just alone and I feel like COVID really took a toll on going to fun places with the boys and all that stuff . How would you tell your fiancé you want to wait a bit longer for kids or how did your spouse react to your decision ?