Moms of big families

Hi you all ! I really need some advice. My husband and I had our 4th child April of 2019 hes currently 9 months. Our other children are 7 , 5 , and 4 . We decided to have a 5th child because we really enjoy our large group and all of our children are well taken care of .I really dont want to wait years to hve another baby because I really hve gotten adjusted to them growing up together and close in age. My question is for moms of multiple children, is it good to wait about 2 yrs or just go ahead and start . I really want to be done. Any advice?