Kailan pwede mag "nesting"?

Hello po 😊 7 months pregnant here 👋🏻 Ask ko lang, kailan pwede mag nesting or mag simula magipon at mag ready ng gamit ni baby? And ano yung maisasuggest nyo na brands na "budget friendly" para sa mga needs (like diapers, powder, shampoo etc) and sure na safe for babies? Thank you in advance 😊❤️