delay flowering with leds ?

Depending how long they last, may need to prun them and let them grow back out... once a branch is rigid and woody, it won't clone easily.

So, you want mother plants. you can keep them small, but you'll have to re-clone them before they get rootbound in small pot. Can't reclone them easily if they are lanky, unhealthy sticks. (for future use or to avoid rootbound) You don't need to max out DLI but you do need to provide enough for normal growth. Once limited by their pot, you can reduce light and fertilization. trial and error as to how low you can go. I used to keep a handful of mother plants in small 1-gallon pots. I'd re-generate them every 4-5 months. YMMV on how long they remain healhty plants in a small pot... regenerate new mothers before health symptoms set in, or learn how to prune roots. It's much harder to clone a rootbound, unhealthy plant

ok first of all everything u guys say makes sense but im kinda just experimenting around and/or trying to save a potential good strain i like . my 1 tent is in flower so thats not an option . also i dont want to grow them big thats why i took a lot lol + im super aware that they will be lanky sticks thats fine for me . after all i might toss all clones if i dont like the strains/phenos so i just keep it as n experiment :) oh all clones are rooted and look somewhat fine + were taken b4 flower.

just start in the tent. better lighting and environment, if anything start outdoors then bring in. Typically Lights are going to be the most expensive part of your setup. if they are not. it might not be a good setup.

What are they doing on the window ledge? Did you take the cuttings off a plant in flower? Or a plant in veg? Are the clones rerooted? At this point light is more or less just to keep the photoperiod from switching to flower. If they haven't even rooted then the amount of light as a energy source needed is very low, so yes even 1-2 10w will do enough.to prevent the transition until you are rdy to place her in the tent. May seem like a bit of a overstatment but one of the most stressful things you can do to a photoperiod is mess with her circadian rhythm. She is a creature of extreme habit and timings. Try and keep her light schedule the same as she will when she enters tent. You don't need to but hermie is a symptom of messing with timings too much.

Clones will be lanky, wont bush out, will overstretch and so on, 2 weeks of veg wont change much, it will be weak base to work with, unless you have very big windows facing south, leds would help them to not panic and stay in veg, if you prolong day by few hours from current 14-15, especially if clones were taken from flowering plant...