Its quite possible that many/most trades have reached their recruiting goals for this FY (fiscal year). The FY the CF goes by is from 01 Apr - 31 Mar yearly. So, taking that into consideration, the CF is thru the 3rd quarter of this FY.
A trade such as AES Op that is "in demand" won't be able to recover to what I'll call full strength in one FY mainly because of a bottleneck in the training system that AES Ops go thru from BMQ to the completion of OTU/MOAT (i.e. the *platform specific* training for Aurora, Sea King). The initial application takes longer because of the aircrew medical. 1 CFFTS in Winnipeg can only run X amount of courses a year of both QL3 and QL5 (aka BAQC and IAQC). Hence, the recruiting system will only bring in the number of folks that can be trained in one year (approx, it may be less or more depending on many factors). So, without an understanding of all this stuff, you might mistakenly think that AES Op is a closed trade, but its really more about how/when the CF takes people in based on bottlenecks in the training system. Which, for the record, it does not always do in the best possible way. PRETC is proof of that IMO.
The decision is yours but...I think I'd wait the 2-3 months to get the trade I had my hear set on rather than take one I didn't want and be miserable for the next X amount of years. But...thats me. I would bet a months pay that offers for DE AES Ops will start again in the new FY.