hiii personally, i have a lot of ideas going on inside my head! they're actually very bothersome to me since it's all over the place. in order for me to get myself to write, i pick one idea that is feasible and start writing immediately before i lose the momentum. also, reason why i have so much fics is that i write fast. i'm used to writing since my major is literature and we're honed to write a lot. usually, i can write 2–3k words in an hour, depending on how much potential i believe my idea has (or if i'm just inspired, though most of my works are nsfw so iykyk). one tip i have for you is maybe don't force yourself to write if you don't feel like it, find the right time and when you're inspired enough, take advantage of that before your ideas fade. plus, try listening to music that you can relate to your fic. i always curate a playlist that gives off the vibe of the fic i'm going for. listen to it while you're writing, i think it's helpful (at least for me).