I suspect you are experienced enough using skates and skis to judge for yourself whether you need new boots. In particular whether they fail to support you with reasonable safety for the type of skating you do. If they are comfortable, and you never feel unsafe... Of course, it might well take a few months for the new skates to come, so you have to take the expected breakdown during that time into account.
I've been doing low level skating in broken down Klingbeil Dance boots that are about 20 years old, and have seen many thousand hours use. But I actually find it very comfortable to do low level skating in broken down boots. Though they are no longer providing good ankle support, and I really do feel a need to replace them. I've stopped jumping altogether, not that I was ever any good at it.
I haven't replaced my tongue, though I did try gluing in a little extra stiff foam under the tongue to cut lace bite. But I switched to round utility (parachute) cord which I can pull a lot tighter than the flat skate laces I used to use, because of the shape, because it fits the holes tightly and doesn't slip back as easily, and because it is a lot more durable. I also make my own insoles, out of camping pad foam, which takes up the expanded interior space. I admit I never tried zip lock bag boxes.
I actually glued stick leather inside to reinforce my first pair of boots, but that didn't work very well. In the mean time I tried an almost unused pair of low level Risport Dance boots, which just happened to fit well, but they broke down in a month or two - I tried to baby them, but apparently they couldn't handle deep edges. I tried to extend their life by tightly wrapping duct tape around them every time, but that really only worked for a few days. And I actually went for that Edea fitting, and probably would have bought if David Ripp had said they could be reformed to fit my feet. I also managed to get an old but completely unused pair of Graf Edmonton Special boots for free (long story) - overbooting to an extreme for my low skating level, as those are high level freestyle boots. They were about 1.5 sizes too large, but I made thick insoles, and other mods, so they worked, but were much heavier and klunkier and stiffer than what I'd used before. Unfortunately, I used mounting screws that weren't long enough in the heels to reach the outsole, and the heels were made of many glued layers of leather, so one heel broke off, and I haven't felt it worth repairing. So I went back to the broken down Klingbeils.
I've noticed that some coaches teach in broken down boots, because they spend so much time on the ice that stiff boots would hurt. But some of them switch to better condition boots for personal skating.