This maybe ?
https://www.mangago.me/read-manga/dekoboko_sugar_days/ (this is the first part)
https://www.mangago.me/read-manga/dekoboko_bittersweet_days/
Here are some!! https://www.mangago.me/read-manga/baby_face_monster_moto_banchou_no_ore_daga_kuso_gaki_ni_ketsu_wo_nerawerete_iru/
https://www.mangago.me/read-manga/the_good_teacher/
https://www.mangago.me/read-manga/woof_wolf/
https://www.mangago.me/read-manga/dekoboko_sugar_days/
https://www.mangago.me/read-manga/makitakun_no_koiji_wo_jamasuru_to_shinu/
Uke is taller than seme