Here’s the thing, if you are training in the middle of a fasting period, the worst thing you could do are:
Heavy lifting. See, during a heavy workout the neurons fire on all cylinders. This puts you in sympathetic mode (which increases cortisol levels) and if it keeps firing on all cylinders after the workout it can cause dopamine depletion/CNS fatigue. You need serotonin and/or GABA to calm the brain down after the session. 2Bs are lower in serotonin and/or GABA which means that from the start they are less effective at calming their CNS down after a session. NOT EATING more easily puts you in sympathetic mode (that’s why a lot of people report greater mental clarity and more energy when intermittent fasting) In other words training in the middle of a fasted state will not only not help you calm your neurons down, it will likely make them fire even faster. This will jack up cortisol even more and create CNS fatigue. The heavier the lifting , the greater is the neural activation/neuron firing rate.
Volume: as you mentioned your glycogen stores will be low, so doing a lot of volume is not a good idea, especially in the middle of a fast because it will lead to low blood sugar levels, which also jack up cortisol.
Honestly the situation you mentioned is about the worst possible one to gain muscle. I guess that you are in a blitz fat loss phase so you likely accepted not gaining muscle. But in your situation, losing muscle is a real possibility even on a smart program.
A lower volume approach like the best damn program or the HIT routine in the Maximum Muscle Bible by Paul and I might be the “least bad” option. You could go even more minimalist than that.
Do you have any reason for using this approach? I know that Ramadan is under way, but the time table doesn’t really fit with the timing of your question. So you must have a specific reason for using this suboptimal approach.