Use Anki and get a free 1k or 5k high-frequency community deck from Anki website. Or get Refold 1k deck (paid) for anki.

If you don’t mind paying, use lingvist (paid) and learn 1k words from there. cancel subscription once done, probably will take 1-3 months.

Try reading graded readers at the same time.

read up on some basic high frequency grammar.

The idea is to learn high frequency vocab and get to consuming content( using language) as soon as possible.