Most forum volunteers are already asleep in the U.S. Your importing might be limited by your server. Try importing via WordPress.com.
1. Create a free account and import your blogger posts there. It might take more than one import process depending on number of your posts/comments. No worries, you won’t get duplicate entries, WP knows if such post has been imported already.
2. After all importing has been completed. Go to admin dashboard of your free WordPress.com account and Go to Tools > Export > All and save the XML file to your computer.
3. Go to the admin dashboard of your self-hosted WordPress blog and run Tools > Import > WordPress WXR and upload the XML file you saved to your hard drive from #2 above. Reminder: in next panel near the bottom, click on option to Include Media Attachments to get the images associated with your respective posts. Again, it might take more than one time to run Tools > Import.
4. After the import’s completed. Double check on all your posts and comments and images are there.
5. When you’re done with all this, please delete your free WordPress.com account so you won’t have duplicate posts in the world wide web which could compete with your site ranking. Might as well delete your Blogger posts as well.
6. Remember to install WordPress Database backup plugin and also backup your WordPress server files and folders regularly.
Good luck ??