Thank you very much Sandra. Your reply was very useful. I did as you said and divided the warp into 3 parts. I also realized that i could reconfigure the warping mill to spread the yarn out further, top to bottom. (I got my mill as an included item when i bought my used loom, without instructions, so i've been figuring it out on my own mostly). I'm getting better at it.
Now that that's done, i realize i never clamped the mill to the table, and based on how much it slid around i can see that i need to remember to do that next time. So much to learn. my brain can only absorb so much at a time!