Is it you are asking to do more because you do not feel what you do is enough, or because you personally need to do more to keep your faith strong? I think other members of this forum will tell you there are highs and lows in the way we all experience our faith. Lent is a pretty intense spiritual period for an Orthodox Christian and, obviously, the period afterwards could be considered the anticlimax, especially for someone new in this faith.
You could talk to your spiritual father about this and do as he says. It occurs to me you could perhaps ask him also for some reading material if reading is something you like doing. Maybe lives of the saints or writings of the Fathers, something about everyday life you could feel you connect to.
Praying, participating in the sacramental life of the Church, and loving as taught by our Lord, are the three things I believe we all work towards, to various degrees according to our strengths and circumstances, with God´s grace. I expect other brothers who have perhaps been in your situation - as time goes by, those who live in various states over the Atlantic will go online - will have some more adequate advice to give.