I grew some OG Kush awhile back. Flowered them really small in three liter containers. Had some issues but they ended up producing a good amount of quality smoke. It was all bud. Trimming was a breeze. Very potent as well.
there tiny for 5 weeks bro....mine are same age and if I didn't scrog and lst mine would be easily 2foot by now....mine were that size by week 3 think you need bigger pots....good news is there still healthy and if it's photo period you can recover just going to add weeks on your grow to get decent yield