If you still haven't read it, I recommend you reading https://www.mangago.zone/read-manga/release_your_persona/
It's written so well and is non toxic
Try searching up list of Japanese BL since most of their BL's were 5 to 8 chapters max.
You can also click on my profile and go to my Already Read list there's tons of it there though you have to cherry pick them.
https://www.mangago.zone/read-manga/link_and_ring/
https://www.mangago.zone/read-manga/family_now_and_forever/
https://www.mangago.zone/read-manga/sekai_de_ichiban_toui_koi/
https://www.mangago.zone/read-manga/haru_to_natsu_to_nacchan_to_aki_to_fuyu_to_boku/
https://www.mangago.zone/read-manga/chameleon_wa_tenohira_ni_koi_wo_suru/
https://www.mangago.zone/read-manga/shinyuu_no_dousei_shite_ni_un_to_iu_made/
https://www.mangago.zone/read-manga/ao_to_midori/
https://www.mangago.zone/read-manga/chiguhagu_na_kiss/
https://www.mangago.zone/read-manga/loss_time_ni_hanamuke_o/
https://www.mangago.zone/read-manga/snow_fairy/
https://www.mangago.zone/read-manga/konosaki_wa_futarikiride/
https://www.mangago.zone/read-manga/old_fashioned_cupcake/
https://www.mangago.zone/read-manga/living_with_him/
https://www.mangago.zone/read-manga/delivery_hug_therapy/
https://www.mangago.zone/read-manga/hidamari_no_orange/
https://www.mangago.zone/read-manga/awairo_emaki/
https://www.mangago.zone/read-manga/kimi_to_nara_koi_wo_shite_mite_mo/
https://www.mangago.zone/read-manga/hayama_sensei_no_dakimakura/
https://www.mangago.zone/read-manga/motoyan_papa_to_hitsuji_sensei_yotsuba/
https://www.mangago.zone/read-manga/ugetsudou_antique/
https://www.mangago.zone/read-manga/itooshiki_hibi/
https://www.mangago.zone/read-manga/toumei_na_ai_no_utsuwa/
https://www.mangago.zone/read-manga/amagami_wo_kimi_ni/
https://www.mangago.zone/read-manga/the_omega_takes_a_husband/
https://www.mangago.zone/read-manga/ookami_sama_no_koiwazurai/
https://www.mangago.zone/read-manga/mitsuya_sensei_no_keikakuteki_na_edzuke/
https://www.mangago.zone/read-manga/shiawase_gohan_maki_to_hanazawa/
https://www.mangago.zone/read-manga/enishi_majiwaru_haguremono/
https://www.mangago.zone/read-manga/muchuu_ni_naruu_yo/
https://www.mangago.zone/read-manga/country_diary/
https://www.mangago.zone/read-manga/tabun_korekara_ai_no_hibi/
can anyone recommend me a yaoi with over 10 or less chapter??