that is a personal choice and you will see that overtime which one comes natural to you.
if you listen to previous episodes, some guests are really specific about sticking to that target language. others have found that it is easier to switch to the language of the school when it comes to homework. so just find your rhythm and try to stick to it.
once homework is done, you can transition to practicing the home language. leverage what your child is learning in school and do exactly what you are doing now with your kids. talk about it in the home language so that you are able to complement what they 