I had the same weight gain during a short break, so went back on, however it wasn't that I suddenly started eating loads so my calorie intake did not justify the weight gain.
there's so much more to it than just appetite suppression though.
I take it for the hormonal benefit as I have PCOS and struggle with insulin resistance, so despite considerable effort to lose weight before the jabs, there was no change. So I know that stopping them could mean I fall straight back in to that struggle, where my body conserves my calories and actually needs very little for day to day functioning.
try weaning down slowly, and seeing what changes you notice, rather than just stopping.
i struggled massively with nausea on it, which also had an impact on my mental health as i experience anxiety+++ when nauseous... but knowing that I had no real alternative option (eat less move more simply doesn't cut it for some!) I stuck with it on a micro dose (1mg per week). It's enough for me to still benefit from the hormonal aspect, and I've lost 2 stone.
maybe keep a food diary of what you eat when on/off jabs so you can really stay accountable.