Crank up the weight, tone down the reps, and stick to 5-8 reps per set. Perform compound movements keeping your reps in the 5-8 range and incorporate isolation movements keeping reps in the 8-12 range.

It's doubtful you will regain your strength in just a few weeks, but you will be amazed at your muscle memory. Stay focused but don't over train. I don't like to give advice on supplements as everyone's body is different.

Just some food for thought........ I am a firm believer in the thought there is no such thing as cutting or toning. It's all about nutrition. The key to building muscle is pumping out enough volume with an ample amount of resistance, and you simply can’t do that by training with high-rep sets above 12. To build both size and strength, you need to work with heavier loads. The more weight you can use, the more muscle you will build. The better your nutritional intake, the less body fat you will have, thus the more defined you will look.

I could go on and on, but I think I'm telling you how to build a clock when all you asked was what time it was.

How much weight have you lost.

Thats a slow cut. Im surprised u lost alot of strength.