Am I done climbing for this season?

Hey, I recently got into plat for the first time. I have realized that I was only getting 18 lp per win and losing the same amount. Then I lost 4 rankeds in a row and I started to receive only 13 lp and lose about 20. I won 5 games in a row but my lp gains were still the same and after 2 loses my lp are all lost again. So I wanted to ask, is it still possible to get more lp per win or am I supposed to stop here and train more in normals?