The answer is no for mainly two reasons:

1. Prohibitive costs. Its extremely expensive (both in money and time) to manufacture many of the parts of the telescopes, such as the reflector dishes. Its even more expensive to do all the testing & certification of the manufactured parts.

2. Its all outdated anyways. The JWST project has been ongoing for literally decades (starting in '96 if I remember). If we were to start from scratch today we would make a lot of different design choices based on more recent technological developments