What's your question? Ask

If you want to wait to prune them, then you can do so as soon as you start to see new growth. This would be a good time to prune if you missed the fall deadline. Here is an article for more information on their care: https://www.gardeningknowhow.com/ornamental/shrubs/weigela/growing-weigela.htm

If your weigela is big enough to have multiple branches, then you will want to cut the branches where they meet at the v section leaving just a small piece of branch. If it is still a single stem, or very young, then you can cut down to your preferred height, right above where a leaf is, or was. Even if you do make a cut in the wrong location, it will not do any damage. The guidelines suggest the best way to make it look its best. It won't be dangerous to cut slightly out of place.

Weigela go dormant in winter; they are not evergreen.

Yes, this may be necessary to give it a kickstart for the year. Make sure there is plenty of "give" in the branches and that they are not completely brittle. This article will give you more information on the care of these: https://www.gardeningknowhow.com/ornamental/shrubs/weigela/growing-weigela.htm

It is best to transplant Weigela after its leaves have fallen off in the fall, but before the ground is frozen. It can also be transplanted in early spring.

You should already be seeing signs of leaf growth, but if it has been a little colder than usual then it may take a little longer. Break the tip of one of the branches, just a few inches from the tip. If it is brittle, then keep cutting until you reach living tissue. Removing any dead growth will usually give it a kickstart.

This article will give you more information on the care of these: https://www.gardeningknowhow.com/ornamental/shrubs/weigela/growing-weigela.htm