hmmm, to be honest i'm not too sure how much help i can be here, because i have been really struggling to sit down and lock in lately. so if anyone reads this and has any advice it's definitely welcome for me too!

overall here are some things that have worked for me in the past that might also work for you:
→ having a deadline and working on that type of adrenaline. an external one (like a fest) helps more than picking one yourself but i think it can help either way if you're strict enough!!!
→ basically striking the iron while it's hot, meaning that if inspiration strikes, writing it down somewhere asap will be helpful — notes app or a piece of paper, doesn't matter. i've actually been recording voice memos and just rambling sometimes and then going from there when i Do have the means to actually write. sometimes an idea is so good it will simply Happen, other wips be damned. and those moments are also allowed to happen, so allow it!!!
→ (additionally, sometimes you gotta let go of certain wips or works indefinitely, just to see if it's simply not feasible or if maybe the motivation comes back. but that line is verrrrrry thin. if you love something let it go etc etc.)
→ limiting distractions (rip twitter), having a designated spot to write (e.g. i write better on my laptop while sitting at my desk but prefer editing on my desktop pc with a bigger computer screen, writing on my phone i only do as a last resort or when i Really feel inspired), and building it into your routine also really help.
→ adding to the routine part, i tried to do a thing where i tried to write at least Something every day. whether it was 10 words or a 100. better that than nothing, i used to think; i had a tracker for it and everything. but personally i have kind of given up on that because life just happens and i just don't think it was for me. i think i prefer to see what my schedule and headspace allow that day and then make it a 'to do' to sit down and like... do Something if i can, as opposed to forcing myself to do shit on the daily when i am not feeling well or too busy. but it's a matter of finding balance i suppose. i think i might pick it up again eventually once i feel a little better but yeah!!
→ sprinting! BIIIIIGGG fan of sprinting. sprinting alone, sprinting with friends, sprinting with other writers... jbwfic have a discord server with a sprinting channel that's being used super regularly, but it's very easy to set one up for yourself if you invite writer-bot to your own discord server. or places like ohwrite! idk. sprinting is just good to like, Commit and make some progress. you can always worry about editing later!
→ if you have someone you trust with your writing, i highly recommend you to ask them to take a look. especially if they're a fellow writer and you trust them on their feedback and honesty. personally i LOVE beta reading for others but find the experience of showing my friends my wips incredibly daunting. but it's helpful! it's motivating, it's productive... yeah.
→ also this may sound silly but i feel like it's soooo important, especially since you talked about 'finding the energy'. and it applies especially for writing fic or making artwork which is something you do for free in your free time: don't be too hard on yourself. there's a balance between pushing yourself to continue and knowing when it's time to take a break. i burn out fast and get demotivated fast and it really sucks but there's times where i know i have to keep pushing but other times where i know it's unwise to do so. especially as an adult with a job and a life, sometimes u gotta spend your free time playing games or watching something or going on a run/walk or going outside or doing literally Anything else. i think just in general though, taking care of yourself is really important. especially for zb1, i know time is precious and we're on a bit of a limit here, but please don't burn yourself out for the sake of writing. it's most important to have fun.

ummmm yeah! tbh it feels a bit ironic because again i've been having Troubleeee and i'm also like. a really slow writer LOL so it's cute you come to me with this when i'm (vaguely gestures) Like This. but i guess that's another thing, to not compare yourself to people who manage to write a lot and write fast at that. everyone goes at their own pace!!! either way so these are by no means foolproof and overall pretty personal but i do really hope they can help you a little bit at least! wishing you the absolute best of luck and rooting for you!!! ♡♡♡