Getting back in form

After ~1.5 months of not playing I decided to play some games.Played a couple of normals and then jumped info ranked.Before queue-ing I started to feel like I shouldn't play yet(because I had a losing streak before and the fact that I wasn't playing that good,definetly not the level I was playing before I stopped playing).I lost that game,even tough it was pretty close then dropped out of Gold V.The next day I lost 1 more and now I'm sitting at 50 points in Silver I.Now my question is how can I get back to the level I was playing at before because I know I'il definetly rank up if I do.Now I just play normals with my friends and most of the games I play decently at max.Any tips on how I could get back in form?