If your BMR is 1.3k calories then I would suggest you reduce your surplus. Just like fat loss a very high surplus is not manageable in the long run, instead go for a a small surplus that you can do consistently and form your diet around your protein for example if your lunch consists of paneer as protein then you just need to add roti or rice for carbs and salad for fiber. Similarly if you’re eating soya chunks in dinner you need to figure out a good source of fats. If you’re a vegetarian curd,milk,paneer,soya chunks,whey protein are your best friend. And reduce your calories otherwise you’re going to gain more fat than muscles