url redirect for rss feed

I am trying to forward the rss feed from a previous WP install to a new WP install. Both are on the same server, just different folders. I’m not using pretty permalinks and my host is Dreamhost.

so here’s what I’ve got in the .htaccess, in the root folder.
——————-
# BEGIN WordPress
<IfModule mod_rewrite.c>
Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^stepintomythimble\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.stepintomythimble\.com$
RewriteRule ^wordpress\/\?feed\=rss2 http\:\/\/stepintomythimble\.com\/wp\/\?feed\=rss2 [R=301,L]
</IfModule>
# END WordPress
———————-

and the forwarding is not working. I’ve tried just doing a php header forward in the wp-rss.php files too, and that’s not working either. any advice? I am pulling my hair out.

Thanks!
C