First of all congratulations on those results, thats awesome.
Secondly, no need to rush my friend. I really really get it , i was the same when i began and made myself sick. you mentioned source, not sure if you are gray or not but plenty of information here to quell that issue if you are gonna go down that route. I don't recommend continuing the week on week off, reta is designed to be weekly tbh.
The changes will come, reta is magic. maybe just reduce your expectations slightly, you said insane results, i think 13kg in 3-4 weeks is INSANE personally already. lots of risks at that level of loss, considering you arent at a crazy high starting weight already. slow and steady in the future, one day you will wake up and fit into those jeans from high school and not even realise how much you have lost