I wonder if we are getting low on anything. Are we forgetting to buy anything?
Are we almost out of anything? Is there something we need to buy?
ーI wonder if we are getting low on anything. Are we forgetting to buy anything?
「何か少なくなってるものあったかな。何か買い忘れない?」
to get low on ... で「…の残りが少なくなる・不足する」
ーAre we almost out of anything? Is there something we need to buy?
「何かなくなりかけのものある?何か買わなきゃいけないものある?」
to be almost out of ... で「そろそろなくなりかけている」
ご参考まで!