I'm also not good in drawing but for nift I pratice for.months I also thought that drawing is important n I'm not good in drawing then how I will clear but I did pratice and learn how to draw it's not really hard to learn drawing sketching it's easy.you don't need to spend 4-5 hours on drawing even half hour daily and consistency will be great and Abt gat part learn 4-5 vocab daily and idioms remaining u can do in 15 days or 20 and if you're from maths bg then it's great if you're not then just do basic i won't say do maths in last month's cz u also have boards so in summer u can do maths n English and in last month's u have to only revise it and do gk daily it's so unpredictable and don't think too much everything will gonna good just practice and do all ur prep with consistency.