Now that you've spent time exploring the Paleo diet, you've probably recognized some foods or habits that have no place in your most healthy life. I'd suggest avoiding those things most of the time. You probably also found some non-Paleo foods are your rocket fuel, and at least right now are really necessary for you to feel and/or perform your best. I'd suggest incorporating those things in moderation with specific intention. Keep in mind that for the most part, eating Paleo is really just eating nutritious, unprocessed foods. Continuing to make nutritious choices more and more of a habit in the future will serve you well, while occasionally eating whatever you want (in the absence of a food allergy/intolerance) is also totally fine.
Now that you've practiced weighing and measuring your food for awhile, you're probably pretty good at visually estimating how much a piece of chicken weighs, and whether your splash of olive oil is more or less than one Tablespoon. If you aren't yet, it's not a bad idea to keep weighing and measuring at least occasionally until you are pretty good at estimating visually. Once you are, keeping up your current habits using visual estimation without tracking might be sufficient to keep you on a healthy path. If you feel like you're starting to slip, you can go back to the baseline step - weighing and measuring for a few days - to recalibrate, and remind yourself how much more or less you actually need to be eating.
If your weight has changed during these 12 weeks, and you want to continue this process, remember that you can't lose weight on a deficit indefinitely because your metabolism will adjust. When your weight loss stalls, it's a good idea to slowly increase your intake (roughly 50 cals per day every 7 days) until you start gaining, and then begin to reintroduce a deficit. Do the same if you want to maintain a lower bodyweight, except when you start gaining just reduce your intake a little bit, rather than re-establishing the original deficit. Finally, trying to reach nutrition goals by focusing only on food quantity (macros) or food quality (Paleo), you'll be similarly effective to CrossFitting without knowing your weight on the bar, or the time for the workout. It's better than nothing, but not as effective as it could be. Keeping focused on both is the best approach I've found for maintaining lasting improvements in performance and body composition.