H-Drol isn't overly suppressive, so lethargy shouldn't be anywhere near as bad as SD or 1-T.
Many folks have like Dermacrine or AMS 4AD which are DHEA derivatives, with a higher conversion to test. Basically anything that can help keep test levels up will help combat lethargy. NTBM is coming out with a Dermacrine replacement called Transaderm that will have double the doses of Dermacrine and also be priced well. It should be out in July.
The other alternative is something like HCGenerate which has Fadogia and Testofen, among other things. The other benefit is libido skyrockets! No problem performing with that as well as keeping energy levels high.