I’ve found that frequent communication and having the team be involved every step of the way is super important here. Try not to design so much in a bubble and be scared of showing rough/unfinished work.
Replying to a tweet:
This is important, especially if they’re waiting you to start building. I like to share early, make them part of the process and if you can, design components / sections first instead of the whole page. So devs can work on them asap