Gradually selling NISA after reaching your lifetime limit

When you've reached your lifetime NISA limit, should you just hold it or gradually sell it so you can refresh your limit and keep on investing in NISA? I wonder which strategy is better.

Basically when you've reached your lifetime limit, you sell 1 year worth of limit on your NISA and transfer it to a normal taxable account so you can keep on investing in the next year.

by Comfortable_Term_874