Will the teeth not covered by bonded retainers go back to the old position?

The retention phase of treatment comes after tooth movements have been completed. Due to the tendency of teeth to shift in the human dentition, you can expect that your teeth will naturally begin to shift back to their original position once your prescribed course of clear aligner treatment is complete. For this reason, retention is a lifelong commitment and you MUST follow the retention instructions prescribed by your doctor. Some instances call for a lingual bar that is bonded to the back of your front teeth. These are rigid metal reinforcements placed behind your teeth to prevent them from moving. In addition, you will need to wear Full Coverage retainers indefinitely until your doctor tells you that you no longer need them. Retainers are typically worn full time, at least 22 hours a day, for the first few weeks to a few months of use. After that initial retention time, you may, with permission from your doctor, start to decrease the amount of time during which you wear your retainers by approximately two hours a day for each week. After a few months of gradually wearing the retainers less frequently throughout the day, you may, with permission from your doctor, begin wearing your retainers at night only. Please keep in mind that decreasing the amount of time during which you wear your retainers depends on the retainers being comfortable and loose when placed in the mouth. If your retainers feel tight or you feel pressure, you must revert back to and repeat the schedule of the previous week. You must wear your retainers every night for the first year of use. After the first year, you may, with permission from your doctor, begin wearing them every other night, provided that they are loose and fitting well; otherwise, you must continue to wear them every night. You should bring your retainers to all future followup appointments so that your doctor can assess their fit and function and make adjustments as necessary.A full coverage essix retainer is vital to keep the back and front teeth aligned.

as an orthodontist, my view is , retention phase is more important than active phase. visit yr orthodontist and discuss yr issue.

Without all the teeth that were moved being retained, you can count on the un-retained ones to do some relapse.  If not too bad at this point, go get retainers for their current positions.