Excel
SQL
Python and pandas library
Powerbi
Tableau
Give 20 hours to each
Create python projects and dashboards for excel, tableau and powerbi and add them in resume.
Search the skill name in youtube, eg "tableau" and in the filters looks for playlist option, binge watch them and practice them.
You can download the softwares in your laptop.
Go to chat gpt and ask question like,
"Act as an interview and ask me 50 interview questions on python for data analysis , also give answers"
Or revise topics with chatgpt like " i have read join in sql, ask me interview questions to test my knowledge"
First focus on breath and then go for depth.