Recovery depends on a lot of factors in your cycle. Long vs short esters, cycle length, gear type. Tren and Deca are HARD to reocover from. Much harder than Test and EQ. So the cycle length plus the tren is probably what caused the issue. In the future, you may want to run HCG during the cycle, 250iu 2x wk through the cycle will help to keep your body producing and get you back on track faster after you stop. It isn't a big expense to add in, and IMO, is well worth it.
I would start HCG at 250iu 2x wk, around wk 3 of your cycle and continue on, until about 3 days out from PCT. On that last couple of shots, if you have more, take a larger bolus, say 1000iu.