Hi, You need to manage time very well if you want to prepare for interviews along with your current job. Practice atleast 1-5 DSA questions/day and try to maintain consistency over the time till you get a job.

Here are some tips to start preparation with:

1. Start solving coding question on your favorites platform like interviewbit, leetcode, gfg.
2. If you are beginner then start solving easy question 1st once you gain confidence there, go to medium and then hard question.
3. Try to solve easy question in 20 min, medium 30 min, hard in 40-50 min. its better to see the solution if u are not able to solve the question within this time frame.
4. After solving question, Try to check out solution posted by other students because sometime we can learn good trick by seeing different solutions.
5. If you have >=2 years of work exp, try to learn system design basics from any free resources available on internet.
6. Try to give free mock interview on interviewbit or you can reach out to me and schedule an mock interview to check if you are ready for real interview.

Hope I answered your question. You can reach out to me in case of any more doubt.