I think the issue is with one of the prior words though. The checksum is a word with not a lot of similar options.
nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl has a way to let you do it…putting first 11 or 23 words, then select remaining random bits and valid check sums supplied for that bit set. I can show you screenshots in a few mins if you want.
Discussion
The checksum is the last 4 bits of the first 23.5 words. You out in 23 words and then manually put in 0000, 0001, 0010, etc for all 16 combinations
Turns out it’s just 3 bits of extra randomness, so only 8 combinations to try.
Are you working on a 12 or 24 word seed? 
This nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl feature lets you use the words themselves as entropy source. A big bottle of 1024 double sided seed word orange pills. 