Since the countable uses of "advice" are an accounting term and an archaic word for news, you should just consider "advice" to be uncountable unless you're an accountant or an author of historical fiction.

Advice in this sense is uncountable. Some advice, a piece of advice, a lot of advice is fine. Biblical advise. There is a lot of advice in the bible.

If you want to use a plural, say "recommendations", "directions", "tips", "pointers", "warnings". Don't say "advices". Why? It is not a question of grammar, just common usage. To make it a plural, we say "pieces of advice".