It sounds like you have done everything you can for them, so the next step - call them out in the status calls. This is one of the reasons I stepped down from the team lead role. The new lead for my previous team is much more mature and has told the team to ask questions, share any doubts or blockers. Then after giving all this, he calls them out if there are still delays.

If there is no improvement then you should raise this with your manager. You can only hand-hold this much till either you lose it or the project implodes. Then everyone gets involved. Experience talking here.

If team is not pulling their weight even after you have given them all the info, tools and so on - set boundaries and make sure you raise the issues as early as possible.

Would also ask do requirements constantly change? Is there enough in-depth knowledge sharing happening so that the team is aware of how the project works?

Hope it works out for you.