If you have to point bow up to draw it back then it is to much draw weight. You should be able to point bow straight ahead as you draw it back. If your current bow has the proper draw weight for you I think shooting something with a shorter draw length might start some bad habits. Another way you could build up strength without purchase of a new bow is to get some surgical tubing (most fishing or tackle shops will carry it) and attach it to a short dowel or broom handle. Adjust length and add more tubes if needed to be able to pull it back like you would a bow string.