Road to our second baby ? ?

Our son is exactly 1 year, 8 months old already :) Two days ago, sabi ng partner -wife ko. Shes pregnant. ?Congrqts to us! ?? please give us tips. Specially sa pag explain sa eldest namin habang hindi pa malaki tummy ng partner ko and lalo na na hes still baby too? and other tips on preparing for second child Hehe thanks! -Papa here