12/12 from seed flowering! don't know what week, help!

Whats going on guys. Little 12/12 from seed project going on here. Need a little help guessing what week she might be into flowering. She 37 days old from seed and I know they like to veg a little before they bloom so it's a little tricky. First pistols emerged on day 26.

P.s
She looks a little young due to some pruning.

BTW, any LST tips would be helpful also.

Thanks