Job Switch: Seeking help

Hello community,

This post is for getting guidance/opinion on the role switch from support role to development role. I really need help from fellow colleagues and exp professionals to proceed further.

So, I had 2.5 years of experience in SAP domain and recently I have switched internally (within the org) to the software engineering team that has complete back end work to do for a foreign client. Tech-stack is Java 17, Eclipse Jersey, MySQL, MongoDB, Azure Cloud and some other technologies too.

Parallelly I have been a part of an online platform for software engineering courses (eg. Bosscoder etc), where I learnt DSA, spring boot, HTML, CSS and JavaScript with React framework. The front end engg. part is not covered yet, but a part of the curriculum.

Now my doubt is, I am planning to work for some months here and in my resume, stretch the starting time of the SWE role, to shadow down the SAP experience. Like 4-5 months experience shown as a year or so. Tell me if it can be a good strategy to reduce barriers of not having experience to join SDE roles in prod-based MNCs. (I know, that I will have to showcase deserving skills, based on experience, in the next company to get an offer, but still!)

Secondly, can the backend framework (Jersey) become a barrier to the job switch to java spring boot roles. Some people told me that experience matters and not the frameworks. I need ur opinions.

Lastly, I am recruited as a Senior software engineer, I will have to prove my worth not just to other companies, but internally within the team. How can I learn more in less time, to equalise the skills with the job role, not 100% but even 60-70% would work. Where to start, what to take care?!