Is the husband still fully responsible to provide for his wife

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

There is no doubt that among the wife's rights upon her husband is that he should spend on her according to reasonable terms in providing her with accommodation, clothing, food and drink, even if she is rich, as Allah Says (what means): {Let a man of wealth spend from his wealth, and he whose provision is restricted - let him spend from what Allah has given him.} [Quran 65:7]

There is no difference of opinion among the scholars that in principle a husband is obliged to spend on his wife, but they differed about the amount he is obliged to spend and about the things that make the wife lose her right upon her husband in this regard.

They detailed this matter and others in their books.

For more benefit, please refer to Fataawa 384913, 337039 and 278863.

Allah knows best.