Confused about glycogen replenishment and training frequency.

Just been doing some internet research and discovered it can take as long as four days to replenish muscle glycogen stores after intense weight training. So OK, on the face of it, I've kind of answered my own question.

But what I'd like to know is, can/should a muscle be trained again when it is not yet fully glyco-replenished if size and muscle gains are the main goal?

Here is my reason for wanting to know. My arms have always been weak and small in size compared to the rest of my body. I have never had problem gaining size on legs, back and chest. But my arms suck. Done curls from all angles for years and even though they gave me some temporary pump size, I felt they never built any longer-term size.

However, all this changed when I started doing one-handed tyre flips starting mid December. Man alive!...Never have I felt such a pump in my arms and felt such soreness in my biceps and forearms. After doing 2 sessions within 3 days, my arms were almost an inch bigger and the muscle felt like concrete. I was absolutely thrilled and went back for a third session 2 days after this.

But on that third session, I felt weak and tired and noticed afterwards, much to my dismay, that my arms shrunk way down in size, back to where they were before, maybe smaller, and were still very sore (but not injured). They remained puny and sore right thru to Xmas and beyond. I was seriously pissed at this (obviously) and haven't been back training since, took all Xmas and New Year off and just ate, slept and had a lazy 2 weeks.

However, in the last 2 days, my arms have completely re-volumized, look jacked, feel hard and have definitely gained in size, with all the muscle soreness now gone. Yet, I haven't trained them now in nearly 2 weeks. I presume this is because glycogen stores have replenished (maybe even over-compensated) and cells become hydrated?

Ok, so if you have read to this point without me having bored you to tears, thanks! What I would REALLY like to know is.....Does it REALLY take all that time (10 days +, in my case) to recover, replenish (glycogen) and grow a muscle that had been really blitzed hard during a work out? Because with what has happened (in my particular case with the tire flips), I am seriously thinking that 10 days rest is the MINIMUM between training each body part for the aim of increasing size & volume. And that bicep curls and tricep presses are just a waste of time and can lead to over training of those body parts because arms receive more than enough stimuli from the big compound movements done in core upper-body training such as the tire-flips, presses, rows, deadlifts and squats even.

I'm not here to try to give advice, I am here to receive it and learn. My arm muscle grew straight after initially training them, then shrunk back to nothing before growing again over 10 days later (presumably when fully recovered). That seems like a long time to me....anyone else have any thoughts on this?